December 25 in History

The 30s decade ran from January 1, AD 30, to December 31, AD 39.

The Temple of the Sun was a temple in the Campus Agrippae in Rome. It was dedicated to Sol Invictus on 25 December 274 by the emperor Aurelian to fulfill a vow he made following his successful campaign against Palmyra in 272 and funded by spoils from that campaign. A college of pontifices (Dei) Solis and annual games with circus races was established for the cult, as well as four-year games (agon Solis) to be held at the end of the Saturnalia. The temple was located in the Regio VII Via Lata. It was decorated with the spoils of war taken from Palmyra and was praised in the ancient sources for its beauty. Although it stood to the east of the via Lata, its exact location is not certain. Near the temple was a porticus where wine was stored. Aurelian had decided that in the future the Roman citizens would also receive free wine and pork from the state in addition to bread and other foodstuffs. This suggests that the temple must have stood in the immediate vicinity of the Castra Urbana built by Aurelian and the Forum Suarium (the wine market), and this location coincides with where the church of San Silvestro in Capite is currently situated. It was the fourth temple dedicated to the Sun in Rome – the other three were in the Circus Maximus, on the Quirinal Hill and in Trastevere. The appearance of the temple is not described in the ancient sources. No remains of the temple have been found and no images of the temple on coins are known.

Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in the Roman Empire, the Edict of Milan decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire. He founded the city of Constantinople (now Istanbul) and made it the capital of the Empire, which it remained for over a millennium. Born in Naissus, a city located in the province of Moesia Superior (now Niš, Serbia), Constantine was the son of Flavius Constantius, a Roman army officer from Moesia Superior, who would become one of the four emperors of the Tetrarchy. His mother, Helena, was a Greek woman of low birth, probably from Bithynia. Later canonised as a saint, she is credited for the conversion of her son in some traditions, though others believe that Constantine converted her. He served with distinction under emperors Diocletian and Galerius. He began his career by campaigning in the eastern provinces against the Persians, before being recalled to the west in AD 305 to fight with his father in the province of Britannia. After his father's death in 306, Constantine was proclaimed as augustus (emperor) by his army at Eboracum (York, England). He eventually emerged victorious in the civil wars of the Tetrarchy against the emperors Maxentius and Licinius to become the sole ruler of the Roman Empire by 324. Upon his accession, Constantine enacted many reforms to strengthen the empire. He restructured the government, separating civil and military authorities. To combat inflation, he introduced the solidus, a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years. He disbanded the Praetorian Guard, which had supported Maxentius. The Roman army was reorganised to consist of mobile units (comitatenses), often around the emperor, to serve on campaigns against external enemies or Roman rebels, and frontier-garrison troops (limitanei) who could counter barbarian raids but were less and less effective against full-scale barbarian invasions. Constantine pursued campaigns against the tribes on the Roman frontiers—such as the Franks, the Alemanni, the Goths, and the Sarmatians—and resettled territories abandoned by his predecessors during the Crisis of the Third Century with citizens of Roman society. Although Constantine lived much of his life as a pagan, he later became a catechumen, as he began to favour Christianity in 312, finally being baptised by Eusebius of Nicomedia, an Arian bishop. He played an influential role in the proclamation of the Edict of Milan in 313, which legalised Christianity in the Roman Empire. He convoked the First Council of Nicaea in 325, which produced the Christian statement of belief known as the Nicene Creed. On his orders, the Church of the Holy Sepulchre was built at the site claimed to be the tomb of Jesus in Jerusalem and was deemed the holiest place in Christendom. He has historically been referred to as the "First Christian Emperor" but while he did favour the Christian Church, some modern scholars debate his beliefs and even his comprehension of Christianity. He is venerated as a saint in Eastern Christianity and parts of Western Christianity, and he did much to push Christianity towards the mainstream of Roman culture. The age of Constantine marked a distinct epoch in the history of the Roman Empire and a pivotal moment in the evolution from classical antiquity to the Middle Ages. He built a new imperial residence in the city of Byzantium, which was officially renamed New Rome, while also taking on the name Constantinople in his honour. It subsequently served as the capital of the empire for more than a thousand years—with the Eastern Roman Empire for most of that period commonly referred to retrospectively as the Byzantine Empire in English. In leaving the empire to his sons and other members of the Constantinian dynasty, Constantine's immediate political legacy was the replacement of Diocletian's Tetrarchy with the principle of dynastic succession. His memory was held in high regard during the lifetime of his children and for centuries after his reign. The medieval church held him up as a paragon of virtue, while secular rulers invoked him as a symbol of imperial legitimacy. The rediscovery of anti-Constantinian sources in the early Renaissance engendered more critical appraisals of his reign, with modern and contemporary scholarship often seeking to balance the extremes of earlier accounts.

Christmas is a festival commemorating the birth of Jesus Christ, observed primarily on December 25 as a religious and cultural celebration among billions of people around the world. A liturgical feast central to Christianity, Christmas preparation begins on the First Sunday of Advent. Advent is followed by Christmastide, which historically in the West lasts twelve days and culminates on Twelfth Night. Christmas Day is a public holiday in many countries and is observed by a majority of Christians; it is also celebrated culturally by many non-Christians and forms an integral part of the annual festive holiday season.

Vetranio (died c. 356 AD) was briefly an imperial usurper and emperor in the Roman Empire in 350, during which time he controlled Illyricum between the rival emperors Magnus Magnentius and Constantius II, eventually capitulating to the latter.

Clovis I (Latin: Chlodovechus; reconstructed Frankish: *Hlodowig c. 466 – 27 November 511) was the first Frankish king to unite the Franks, changing the form of leadership from a group of petty kings to rule by a single king, and ensuring that the kingship was passed down to his heirs. He is considered the founder of the Merovingian dynasty, which ruled the Frankish kingdom for the next two centuries. Clovis is an important figure in the history of France. According to Charles de Gaulle, he was "the first king of what would become France." Clovis succeeded his father, Childeric I, as a king of the Salian Franks in 481, and eventually came to rule an area extending from what is now the southern Netherlands to northern France, corresponding in Roman terms to Gallia Belgica (northern Gaul). At the Battle of Soissons (486), he established control over a rump state of the fragmenting Western Roman Empire, which was under the command of Syagrius. By the time of his death in 511, Clovis had conquered several smaller Frankish kingdoms in the northeast of Gaul, stretching into what is now Germany. Clovis also conquered the Alemanni in eastern Gaul and the Visigothic kingdom of Aquitania in the southwest. These campaigns added significantly to his Frankish domains and established his dynasty as a major political and military presence in western Europe. Clovis is also significant because of his baptism between 498 and 506, largely at the behest of his wife, Clotilde, who would later be venerated as a saint for this act, celebrated today in both the Catholic Church and Eastern Orthodox Church. The adoption of Catholicism (as opposed to the Arianism of most other Germanic tribes) by Clovis led to widespread conversions among the Franks, and eventually to religious unification across what is now modern-day France, the Low Countries and Germany. The alliance between the Franks and Catholicism eventually led to Charlemagne's crowning by the Pope as emperor in 800, and to the subsequent birth of the early Holy Roman Empire in the middle of the 10th century.

Augustine of Canterbury (early 6th century – c. 26 May 604, or 605) was a Christian monk who became the first Archbishop of Canterbury in the year 597. He was the prior of a Benedictine monastery in Rome when Pope Gregory I chose him in 595 to lead a mission, usually known as the Gregorian mission, to Britain to Christianize King Æthelberht and his Kingdom of Kent from Anglo-Saxon paganism. Kent was likely chosen because Æthelberht commanded major influence over neighbouring Anglo-Saxon kingdoms in addition to his marriage to Bertha, a Frankish princess and Christian, who was expected to exert some influence over her husband. Before reaching Kent, the missionaries had considered turning back, but Gregory urged them on, and in 597 Augustine landed on the Isle of Thanet and proceeded to Æthelberht's main town, Canterbury. King Æthelberht converted to Christianity and allowed the missionaries to preach freely, giving them land to found a monastery outside the city walls. Augustine was consecrated as a bishop and converted many of the king's subjects, including thousands during a mass baptism on Christmas Day in 597. Pope Gregory sent more missionaries in 601, along with encouraging letters and gifts for the churches, although attempts to persuade the native British bishops to submit to Augustine's authority failed. Roman bishops were established at London, and Rochester in 604, and a school was founded to train Anglo-Saxon priests and missionaries. Augustine also arranged the consecration of his successor, Laurence of Canterbury. The archbishop probably died in 604 and was soon revered as a saint.

Charlemagne ( SHAR-lə-mayn; 2 April 748 – 28 January 814) was King of the Franks from 768, King of the Lombards from 774, and Emperor of what is now known as the Carolingian Empire from 800. He united most of Western and Central Europe and was the first recognised emperor to rule from the west after the fall of the Western Roman Empire approximately three centuries earlier. Charlemagne's reign was marked by political and social changes that had lasting influence on Europe throughout the Middle Ages. A member of the Frankish Carolingian dynasty, Charlemagne was the eldest son of Pepin the Short and Bertrada of Laon. With his brother Carloman I, he became king of the Franks in 768 following Pepin's death and became the sole ruler three years later. Charlemagne continued his father's policy of protecting the papacy and became its chief defender, removing the Lombards from power in northern Italy in 774. His reign saw a period of expansion that led to the conquests of Bavaria, Saxony, and northern Spain, as well as other campaigns that led Charlemagne to extend his rule over a large part of Europe. Charlemagne spread Christianity to his new conquests, as seen at the Massacre of Verden against the Saxons. He also sent envoys and initiated diplomatic contact with Harun al-Rashid, the Abbasid caliph in the 790s, due to their mutual interest in Iberian affairs. In 800, Charlemagne was crowned emperor in Rome by Pope Leo III. Although historians debate the coronation's significance, the title represented the height of his prestige and authority. Charlemagne's position as the first emperor in the West in over 300 years brought him into conflict with the Eastern Roman Empire in Constantinople. Through his assumption of the imperial title, he is considered the forerunner to the line of Holy Roman Emperors, which persisted into the 19th century. As king and emperor, Charlemagne engaged in numerous reforms in administration, law, education, military organisation, and religion, which shaped Europe for centuries. The stability of his reign began a period of cultural activity known as the Carolingian Renaissance. Charlemagne died in 814 and was buried at the Palatine Chapel (now part of Aachen Cathedral) in Aachen, his imperial capital city. Charlemagne's influence on the Middle Ages and on the territory he ruled has led him to be called the "Father of Europe" by many historians. He is seen as a founding figure by multiple European states, and several historical royal houses of Europe trace their lineage back to him. Charlemagne has been the subject of artworks, monuments and literature during and after the medieval period.

Leo V the Armenian (Greek: Λέων ὁ Ἀρμένιος, Léōn ho Arménios; c. 775 – 25 December 820) was the Byzantine emperor from 813 to 820. He is chiefly remembered for ending the decade-long war with the Bulgars, as well as initiating the second period of Byzantine iconoclasm. A senior general of Armenian origin, Leo distinguished himself under Nikephoros I and Michael I Rhangabe, eventually becoming the stratēgos of the Anatolic Theme. Taking advantage of Michael's defeat at the Battle of Versinikia, he forced the emperor to abdicate in his favour. He was able to withhold the blockade of Constantinople by Krum of Bulgaria and, after Krum's death, concluded a 30-year peace with his successor Omurtag. In 815, Leo deposed Patriarch Nikephoros and reinstituted iconoclasm. He was assassinated by supporters of Michael the Amorian, one of his most trusted generals, who succeeded him on the throne in 820.

Mieszko II Lambert (Polish pronunciation: [ˈmjɛʂkɔ ˈdruɡʲi ˈlambɛrt] ; c. 990 – 10/11 May 1034) was King of Poland from 1025 to 1031 and Duke from 1032 until his death. He was the second son of Bolesław I the Brave but the eldest born from his third wife, Emnilda of Lusatia. He organized two devastating invasions of Saxony in 1028 and 1030. Then, he ran a defensive war against Germany, Bohemia and the Kievan princes. Mieszko II was forced to escape from the country in 1031 after an attack by Yaroslav I the Wise, who installed Mieszko's older half-brother Bezprym on the Polish throne. Mieszko II took refuge in Bohemia, where he was imprisoned by Duke Oldrich. In 1032, he regained power in one of Poland's three districts, then united the country, making good use of the remaining power structures. At this time, several Polish territorial acquisitions of his father were lost: Upper Lusatia (also known as Milsko), part of Lower Lusatia, Red Ruthenia, the western and central parts of Upper Hungary (now Slovakia) and probably Moravia. Mieszko II was very well educated for the period. He was able to read and write and knew both Greek and Latin. He is unjustly known as Mieszko II Gnuśny (the "Lazy", "Stagnant" or "Slothful"). He received that epithet due to the unfortunate way his reign ended, but in the beginning, he acted as a skillful and talented ruler.

Henry III (German: Heinrich III, 28 October 1016 – 5 October 1056), called Heinrich the Pious, was Holy Roman Emperor from 1046 until his death in 1056. A member of the Salian dynasty, he was the eldest son of Conrad II and Gisela of Swabia. Henry was raised by his father, who made him Duke of Bavaria in 1026, appointed him co-ruler in 1028 and bestowed him with the duchy of Swabia and the Kingdom of Burgundy ten years later in 1038. The emperor's death the following year ended a remarkably smooth and harmonious transition process towards Henry's sovereign rule, that was rather uncharacteristic for the Ottonian and Salian monarchs. Henry succeeded Conrad II as Duke of Carinthia and King of Italy and continued to pursue his father's political course on the basis of virtus et probitas (courage and honesty), which led to an unprecedented sacral exaltation of the kingship. In 1046 Henry ended the papal schism, was crowned Emperor by Pope Clement II, freed the Vatican from dependence on the Roman nobility and laid the foundation for its empire-wide authority. In the duchies, Henry enforced the sovereign royal right of disposition, thereby ensuring tighter control. In Lorraine, this led to years of conflict from which he emerged victorious. Another sphere of defiance formed in southern Germany from 1052 to 1055. Henry III died in 1056, aged only 39. Modern historians identify the final years of his reign as the beginning of a crisis in the Salian monarchy.

William the Conqueror (c. 1028 – 9 September 1087), sometimes called William the Bastard, was the first Norman king of England (as William I), reigning from 1066 until his death. A descendant of Rollo, he was Duke of Normandy (as William II) from 1035 onward. By 1060, following a long struggle, his hold on Normandy was secure. In 1066, following the death of Edward the Confessor, William invaded England, leading a Franco-Norman army to victory over the Anglo-Saxon forces of Harold Godwinson at the Battle of Hastings. He suppressed subsequent English revolts in what has become known as the Norman Conquest. The rest of his life was marked by struggles to consolidate his hold over England and his continental lands, and by difficulties with his eldest son, Robert Curthose. William was the son of the unmarried Duke Robert I of Normandy and his mistress Herleva. His illegitimate status and youth caused some difficulties for him after he succeeded his father, as did the anarchy which plagued the first years of his rule. During his childhood and adolescence, members of the Norman aristocracy battled each other, both for control of the child duke and for their own ends. In 1047, William quashed a rebellion and began to establish his authority over the duchy, a process that was not complete until about 1060. His marriage in the 1050s to Matilda of Flanders provided him with a powerful ally in the neighbouring county of Flanders. By the time of his marriage, William was able to arrange the appointment of his supporters as bishops and abbots in the Norman church. His consolidation of power allowed him to expand his horizons, and he secured control of the neighbouring county of Maine by 1062. In the 1050s and early 1060s, William became a contender for the throne of England held by the childless Edward the Confessor, his first cousin once removed. There were other potential claimants, including the powerful English earl Harold Godwinson, whom Edward named as king on his deathbed in January 1066. Arguing that Edward had previously promised the throne to him and that Harold had sworn to support his claim, William built a large fleet and invaded England in September 1066. He decisively defeated and killed Harold at the Battle of Hastings on 14 October 1066. After further military efforts, William was crowned king on Christmas Day, 1066 in London. He made arrangements for the governance of England in early 1067 before returning to Normandy. Several unsuccessful rebellions followed, but William's hold on England was mostly secure by 1075, allowing him to spend the greater part of his reign in continental Europe. William's final years were marked by difficulties in his continental domains, troubles with his son, Robert, and threatened invasions of England by the Danes. In 1086, he ordered the compilation of the Domesday Book, a survey listing all of the land-holdings in England along with their pre-Conquest and current holders. He died in September 1087 while leading a campaign in northern France, and was buried in Caen. His reign in England was marked by the construction of castles, settling a new Norman nobility on the land, and a change in the composition of the English clergy. He did not try to integrate his domains into one empire but continued to administer each part separately. His lands were divided after his death: Normandy went to Robert, and England went to his second surviving son, William Rufus.

Bolesław II the Bold (Polish: Bolesław II Śmiały; c. 1042 – 2 or 3 April 1081 or 1082), also known as the Generous (Szczodry ), was Duke of Poland from 1058 to 1076 and King of Poland from 1076 to 1079. He was the eldest son of Duke Casimir I the Restorer and Maria Dobroniega of Kiev. Bolesław II is considered to have been one of the most capable of the Piast rulers. In 1075, he re-established the Archdiocese of Gniezno (consecrated in 1064) and founded the Diocese of Płock. He established Benedictine monasteries in Mogilno, Lubin and Wrocław. Bolesław II was also the first Polish monarch to produce his own coinage in quantity great enough to replace the foreign coins prevalent in the country during the reigns of the first Piast kings. He established royal mints in Kraków and Wrocław and reformed the coinage, which brought considerable revenue into the royal coffers. All these efforts had an enormous influence on the economic and cultural development of the country. According to the chronicler Gallus Anonymus, during his reign, he was called largus ("the Generous" in English, Szczodry in Polish) as he founded many churches and monasteries throughout Poland. The nickname "the Bold" (Śmiały) was only given to Bolesław II for the first time in the later Chronicle of the Polish kings, although it was considered by historiography of the 19th and 20th centuries as a contemporary nickname.

Baldwin I (1060s – 2 April 1118) was the first count of Edessa from 1098 to 1100 and king of Jerusalem from 1100 to his death in 1118. He was the youngest son of Count Eustace II of Boulogne and Ida of Lorraine and married a Norman noblewoman, Godehilde of Tosny. He received the County of Verdun in 1096, but he soon joined the crusader army of his brother Godfrey of Bouillon and became one of the most successful commanders of the First Crusade. While the main crusader army was marching across Asia Minor in 1097, Baldwin and the Norman Tancred launched a separate expedition against Cilicia. Tancred tried to capture Tarsus in September, but Baldwin forced him to leave it, which gave rise to an enduring conflict between them. Baldwin seized important fortresses in the lands to the west of the Euphrates with the assistance of local Armenians. Thoros of Edessa invited him to come to Edessa to fight against the Seljuks. Taking advantage of a riot against Thoros, Baldwin seized the town and established the first Crusader state on 10 March 1098. To strengthen his rule, the widowed Baldwin married an Armenian ruler's daughter (who is now known as Arda). He supplied the main crusader army with food during the siege of Antioch. He defended Edessa against Kerbogha, the governor of Mosul, for three weeks, preventing him from reaching Antioch before the crusaders captured it. Godfrey of Bouillon, whom the crusaders had elected their first ruler in Jerusalem, died in 1100. Daimbert, the Latin patriarch, and Tancred offered Jerusalem to Tancred's uncle, Bohemond I of Antioch. Godfrey's retainers took possession of the town and urged Baldwin to claim Godfrey's inheritance. Since a Muslim ruler had captured Bohemond, Baldwin marched to Jerusalem, meeting little resistance. The patriarch crowned him king in Bethlehem on 25 December. He captured Arsuf and Caesarea in 1101, Acre in 1104, Beirut in 1110, and Sidon in 1111, with the assistance of Genoese and Venetian fleets and of several smaller crusader groups, but all his attempts to capture Ascalon and Tyre failed. After his victory at the third battle of Ramla in 1105, the Egyptians launched no further major campaigns against the Kingdom of Jerusalem. Baldwin helped Count Bertrand of Toulouse to capture Tripoli in 1109. Being the only crowned monarch in the Latin East, Baldwin claimed suzerainty over other crusader rulers. Baldwin II of Edessa and Bertrand swore fealty to him. Tancred, who ruled the Principality of Antioch, also obeyed his summons. Baldwin supported Baldwin II and Tancred against Kerbogha's successor, Mawdud, who launched a series of campaigns against Edessa and Antioch in the early 1110s. He erected fortresses in Oultrejordain—the territory to the east of the Jordan River—to control the caravan routes between Syria and Egypt. He died during a campaign against Egypt in 1118.

Roger II or Roger the Great (Italian: Ruggero II, Sicilian: Ruggeru II, Greek: Ρογέριος; 22 December 1095 - 26 February 1154) was King of Sicily and Africa, son of Roger I of Sicily and successor to his brother Simon. He began his rule as Count of Sicily in 1105, became Duke of Apulia and Calabria in 1127, then King of Sicily in 1130 and King of Africa in 1148.

John IV Doukas Laskaris (or Ducas Lascaris) (Greek: Ἰωάννης Δούκας Λάσκαρις, romanized: Iōánnēs Doúkās Láskaris; December 25, 1250 – c. 1305) was the fourth emperor of the Nicaean Empire from August 16, 1258 to December 25, 1261, one of the Greek successor states formed after the Sack of Constantinople by the Roman Catholics during the Fourth Crusade. He was the last emperor from the prominent Laskarid dynasty and the last to only rule Nicaea before the Reconquest of Constantinople by his successor in 1261.

Charles IV (German: Karl IV.; Czech: Karel IV.; Latin: Carolus IV; also known as Charles of Luxembourg German: Karl von Luxemburg; Czech: Karel Lucemburský; Latin: Carolus Luxemburgensis; Luxembourgish: Karel vu Lëtzebuerg; born Wenceslaus German: Wenzel; Czech: Václav; 14 May 1316 – 29 November 1378) was Holy Roman Emperor from 1355 until his death in 1378. He was elected King of Germany (King of the Romans) in 1346 and became King of Bohemia (as Charles I) that same year. He was a member of the House of Luxembourg from his father's side and the Bohemian House of Přemysl from his mother's side; he emphasized the latter due to his lifelong affinity for the Bohemian side of his inheritance, and also because his direct ancestors in the Přemyslid line included two saints. He was the eldest son and heir of John of Bohemia, King of Bohemia and Count of Luxembourg, who died at the Battle of Crécy on 26 August 1346. His mother, Elizabeth, Queen of Bohemia, was the sister of Wenceslaus III, King of Bohemia and Poland, the last of the male Přemyslid rulers of Bohemia. Charles inherited the County of Luxembourg from his father and was elected king of the Kingdom of Bohemia. On 2 September 1347, Charles was crowned King of Bohemia. On 11 July 1346, the prince-electors chose him as King of the Romans (rex Romanorum) in opposition to Louis IV, Holy Roman Emperor of the House of Wittelsbach. Charles was crowned on 26 November 1346 in Bonn. After his opponent died, he was re-elected in 1349 and crowned King of the Romans. In 1355, he was crowned King of Italy and Holy Roman Emperor. With his coronation as King of Burgundy at Arles in 1365, he became the crowned ruler of all the kingdoms of the Holy Roman Empire. Having played a key part in the political and cultural history of the Kingdom of Bohemia, he remains a popular historical figure in the Czech lands. The Golden Bull of 1356 marked a structural change in the politics of the Holy Roman Empire. Several aspects of his legacy remain contentious, however. The image of Charles as a wise, pious, peace-loving king (partly constructed by Charles himself) has proved influential until this day, supported by several artistic or scholarly projects produced during Charles's reign or afterwards.

A carrack is a three- or four-masted ocean-going sailing ship that was developed in the 14th to 15th centuries in Europe, most notably in Portugal and Spain. Evolving from the single-masted cog, the carrack was first used for European trade from the Mediterranean to the Baltic. Shortly thereafter, these ships found use in the increasingly lucrative trade routes between Europe and Africa and eventually in the emerging trans-Atlantic trade with the Americas. In their most advanced forms, they were used by the Portuguese and Spaniards for trade between Europe, Africa and Asia starting in the late 15th century, before being gradually superseded in the late 16th and early 17th centuries by the galleon.

The Battle of Tucapel (also known as the Disaster of Tucapel) is the name given to a battle fought between Spanish conquistador forces led by Pedro de Valdivia and Mapuche (Araucanian) Indians under Lautaro that took place at Tucapel, Chile on December 25, 1553. The battle occurred in the context of the first stage of the Arauco War, named the "offensive war" within a larger uprising by Araucanians against the Spanish conquest of Chile. It was a defeat for the Spaniards, resulting in the capture and eventual death of Valdivia.

Pope Pius IV (Italian: Pio IV; 31 March 1499 – 9 December 1565), born Giovanni Angelo Medici, was head of the Catholic Church and ruler of the Papal States from 25 December 1559 to his death, in December 1565. Pope Paul III appointed Medici Archbishop of Ragusa, and sent him on diplomatic missions to the Holy Roman Empire and Hungary. He presided over the final session of the Council of Trent. His nephew, Cardinal Charles Borromeo, was a close adviser. As pope, Pius IV initiated a number of building projects in Rome, including one to improve the water supply.

Johann Sebastian Bach was a German composer and musician of the late Baroque period. He is known for his prolific output across a variety of instruments and forms, including the orchestral Brandenburg Concertos; solo instrumental works such as the Cello Suites and Sonatas and Partitas for Solo Violin; keyboard works such as the Goldberg Variations and The Well-Tempered Clavier; organ works such as the Schübler Chorales and the Toccata and Fugue in D minor; and choral works such as the St. Matthew Passion and the Mass in B minor. He is known for his mastery of counterpoint, as heard in The Musical Offering and The Art of Fugue. Felix Mendelssohn precipitated the Bach Revival with a performance of the St. Matthew Passion in 1829. Ever since, Bach has been acclaimed as one of the greatest composers in the history of Western music.

Johann Sebastian Bach was a German composer and musician of the late Baroque period. He is known for his prolific output across a variety of instruments and forms, including the orchestral Brandenburg Concertos; solo instrumental works such as the Cello Suites and Sonatas and Partitas for Solo Violin; keyboard works such as the Goldberg Variations and The Well-Tempered Clavier; organ works such as the Schübler Chorales and the Toccata and Fugue in D minor; and choral works such as the St. Matthew Passion and the Mass in B minor. He is known for his mastery of counterpoint, as heard in The Musical Offering and The Art of Fugue. Felix Mendelssohn precipitated the Bach Revival with a performance of the St. Matthew Passion in 1829. Ever since, Bach has been acclaimed as one of the greatest composers in the history of Western music.

Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing roughly every 74–79 years. It last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061. Officially designated 1P/Halley, it is also commonly called Comet Halley, or sometimes simply Halley.

The Mapuche, also known as Araucanians, are a group of Indigenous inhabitants of south-central Chile and southwestern Argentina, including parts of Patagonia. The collective term refers to a wide-ranging ethnicity composed of various groups who share a common social, religious, and economic structure, as well as a common linguistic heritage as Mapudungun speakers. Their homelands once extended from Choapa Valley to the Chiloé Archipelago and later spread eastward to Puelmapu, a land comprising part of the Argentine pampa and Patagonia. Today, the Mapuche represent 77.16% of Chile’s indigenous peoples and about 8.8% of the total national population. The Mapuche are concentrated in the Araucanía region. Many have migrated from rural areas to the cities of Santiago and Buenos Aires to pursue economic opportunities. Around 92% of the Mapuches are from Chile.

The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence or simply the American Revolution, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot forces organized as the Continental Army and, commanded by George Washington, defeated the British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war, but Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war. In 1783, in the Treaty of Paris, the British Crown acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and sovereign nation. In 1763, after the British Empire gained dominance in North America following its victory over the French Colonial Empire during the Seven Years' War, tensions and disputes began escalating between the British and their Thirteen Colonies, especially following passage of the Stamp and Townshend Acts. The British Army responded by seeking to occupy Boston militarily, leading to the Boston Massacre on March 5, 1770. In mid-1774, with tensions escalating even further between the British Army and the Thirteen Colonies, the British Parliament had imposed the Intolerable Acts, an attempt to disarm British-American colonists, leading to the Battles of Lexington and Concord in April 1775, the first battles of the Revolutionary War. In June 1775, the Second Continental Congress voted to incorporate colonial-based Patriot militias into a central military, the Continental Army, and unanimously appointed Washington its commander-in-chief. Two months later, in August 1775, king George III declared the colonies to be in a state of rebellion. In July 1776, the Second Continental Congress formalized the war, passing the Lee Resolution on July 2, and, two days later, unanimously adopting the Declaration of Independence, on July 4. In March 1776, in an early win for the newly-formed Continental Army under Washington's command, following a successful siege of Boston, the Continental Army successfully drove the British Army out of Boston. British commander in chief William Howe responded by launching the New York and New Jersey campaign, which resulted in Howe's capture of New York City in November 1776. Washington responded by clandestinely crossing the Delaware River and winning small but significant victories at Trenton and Princeton. In the summer of 1777, as Howe was poised to capture Philadelphia, the Continental Congress fled to Baltimore. In October 1777, a separate northern British force under the command of John Burgoyne was forced to surrender at Saratoga in an American victory that proved crucial in convincing France and Spain that an independent United States was a viable possibility. France signed a commercial agreement with the revolutionaries, followed by a Treaty of Alliance in February 1778. In 1779, the Sullivan Expedition undertook a scorched earth campaign against British-allied factions of the Haudenosaunee Confederacy (also Iroquois). American Indian raids on the American frontier, however, continued to be a problem. Also, in 1779, Spain allied with France against Great Britain in the Treaty of Aranjuez, though Spain did not formally ally with the Americans. Howe's replacement Henry Clinton intended to take the war against the British American colonists into the Southern Colonies. Despite some initial success, British General Cornwallis was besieged by a Franco-American army in Yorktown, Virginia, in September and October 1781. The French navy cut off Cornwallis's escape and he was forced to surrender in October. The British wars with France and Spain continued for another two years, but fighting largely ceased in North America. In the Treaty of Paris, signed on September 3, 1783, Great Britain acknowledged the sovereignty and independence of the United States, bringing the American Revolutionary War to an end. The Treaties of Versailles resolved Great Britain's conflicts with France and Spain, and forced Great Britain to cede Tobago, Senegal, and small territories in India to France, and Menorca, West Florida, and East Florida to Spain.

The Northwest Indian War was an armed conflict for control of the Northwest Territory between the United States and a loose confederation of Native American peoples who called themselves the United Indian Nations but are better known today as the Northwestern Confederacy. The United States Army considers the conflict to be the first of the American Indian Wars.

Ephraim McDowell (November 11, 1771 – June 25, 1830) was an American medical doctor and pioneer surgeon. The first person to successfully remove an ovarian tumor, he has been called "the father of ovariotomy" as well as founding father of abdominal surgery.

Samuel Marsden (25 June 1765 – 12 May 1838) was an English-born priest of the Church of England in Australia and a prominent member of the Church Missionary Society. He played a leading role in cross-cultural interchange with Māori people and bringing Christianity to New Zealand. Marsden was a prominent figure in early New South Wales, partly through his role as the colony's senior Anglican cleric and as a pioneer of the Australian wool industry. He is also remembered for his harsh punishments meted out as a magistrate at Parramatta, his bigoted social views and his self-serving financial dealings, all of which attracted contemporary criticism.

The Handel and Haydn Society is an American chorus and period instrument orchestra based in Boston, Massachusetts. Known colloquially as 'H+H', the organization has been in continual performance since its founding in 1815, the longest serving such performing arts organization in the United States.

The Baptist War was an eleven-day rebellion that started on 25 December 1831 and involved up to 60,000 of the 300,000 slaves in the Colony of Jamaica. The uprising was led by a black Baptist deacon, Samuel Sharpe, and waged largely by his followers. The revolt, though militarily unsuccessful, played a major part in the abolition of slavery throughout the British Empire. It is also known as the Sam Sharp Rebellion, the Christmas Rebellion, the Christmas Uprising and the Great Jamaican Slave Revolt of 1831–32.

The Second Seminole War, also known as the Florida War, was a conflict from 1835 to 1842 in Florida between the United States and groups of people collectively known as Seminoles, consisting of Creek and Black Seminoles as well as other allied tribes. It was part of a series of conflicts called the Seminole Wars. The Second Seminole War, often referred to as the Seminole War, is regarded as "the longest and most costly of the Indian conflicts of the United States". After the Treaty of Payne's Landing in 1832 that called for the Seminoles' removal from Florida, tensions rose until fierce hostilities occurred in Dade's massacre in 1835. This engagement officially started the war although there were a series of incidents leading up to the Dade battle. The Seminoles and the U.S. forces engaged in mostly small engagements for more than six years. By 1842, only a few hundred native people remained in Florida. Although no peace treaty was ever signed, the war was declared over on August 14, 1842, by Colonel William Jenkins Worth.

Both during and after the American Civil War, pardons for ex-Confederates were given by US presidents Abraham Lincoln and Andrew Johnson and were usually extended for those who had served in the military above the rank of colonel or civilians who had exercised political power under the Confederate government. The power to pardon offences to the US government was given to the chief executive in the US Constitution under Article II.

Wilhelm Richard Wagner was a German composer, theatre director, essayist, and conductor, best known for his operas, although his mature works are often referred to as music dramas. Unlike most composers, Wagner wrote both the libretti and the music for all of his stage works. He first achieved recognition with works in the Romantic tradition of Carl Maria von Weber and Giacomo Meyerbeer, but revolutionised the genre through his concept of the Gesamtkunstwerk, which sought to unite poetic, musical, visual, and dramatic elements. In that approach, the drama unfolds as a continuously sung narrative, with the music evolving organically from the text rather than alternating between arias and recitatives. Wagner outlined those ideas in a series of essays published between 1849 and 1852, most fully realising them in the first half of his four-opera cycle Der Ring des Nibelungen.

World War I, or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. One of the deadliest conflicts in history, World War I caused 15 to 22 million deaths, including those resulting from war crimes and genocides. The war also contributed to the spread of the Spanish flu pandemic. The conflict saw important developments in weaponry, including machine guns, artillery, aircraft, chemical weapons, and tanks.

The National Protection War, also known as the Anti-Monarchy War, or the Third Revolution, was a civil war that took place in China from December 1915 to July 1916. Following the overthrow of the Qing dynasty three years previously, the Republic of China was established in its place. The war was caused by President Yuan Shikai's proclamation of the Empire of China, with himself as the Hongxian Emperor.

Bhimrao Ramji Ambedkar was an Indian jurist, economist, social reformer and politician who chaired the committee that drafted the Constitution of India based on the debates of the Constituent Assembly of India and the first draft of Sir Benegal Narsing Rau. Ambedkar served as Law and Justice minister in the first cabinet of Jawaharlal Nehru. He later renounced Hinduism and converted to Buddhism, inspiring the Dalit Buddhist movement.

Chester William Nimitz was a fleet admiral in the United States Navy. He played a major role in the naval history of World War II as Commander in Chief, US Pacific Fleet, and Commander in Chief, Pacific Ocean Areas, commanding Allied air, land, and sea forces during World War II.

World War II, or the Second World War, was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many engaging in total war on an unprecedented scale. World War II was the deadliest conflict in history, causing the deaths of 60 to 75 million people, a majority of whom were civilians. Millions died as a result of massacres, starvation, disease, and genocides, including the Holocaust. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

Émile Henry Muselier was a French admiral who led the Free French Naval Forces during World War II. He was responsible for the idea of distinguishing his fleet from that of Vichy France by adopting the Cross of Lorraine, which later became the emblem of all of the Free French. After entering the French Naval Academy in 1899, he embarked on a brilliant and eventful military career. He ran unsuccessfully in the legislative elections of 1946 as vice-president of the Rally of Republican Lefts and then entered private life as a consulting engineer before his retirement in 1960. He is buried in the cemetery of St. Pierre, at Marseille.

In nuclear physics, a nuclear chain reaction occurs when one single nuclear reaction causes an average of one or more subsequent nuclear reactions, thus leading to the possibility of a self-propagating series or "positive feedback loop" of these reactions. The specific nuclear reaction may be the fission of heavy isotopes. A nuclear chain reaction releases several million times more energy per reaction than any chemical reaction.

The Stone of Scone is an oblong block of red sandstone that was used in the coronation of Scottish monarchs until the 13th century when it was seized by Edward I during the First War of Scottish Independence and taken to England. Thereafter, it was used in the coronation of English and later British monarchs.

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR), was a transcontinental country that spanned much of Eurasia from its formation in 1922 until its dissolution in 1991. It was the world's third-most populous country, the largest by area, and bordered twelve other countries. A diverse multinational state, it was organized as a federal union of national republics, with the largest and most populous being the Russian Soviet Federative Socialist Republic (SFSR). The world's flagship communist state, it was governed by the Communist Party under Marxism–Leninism, through soviet councils. The Soviet economy was also centrally planned. Its capital and largest city was Moscow.

Bayrak Radio and Television Corporation, is the state-funded public broudcaster in the Turkish Republic of Northern Cyprus. It operates BRT1 and BRT2.

The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969. The Apollo program was conceived in 1960 in the Dwight D. Eisenhower presidency during Project Mercury and executed after Project Gemini. The Apollo program was later dedicated to President John F. Kennedy's national goal, "before this decade is out, of landing a man on the Moon and returning him safely to the Earth" in his address to the U.S. Congress on May 25, 1961.

The Kilvenmani massacre was an incident in Kizhavenmani village, Nagapattinam district of Tamil Nadu state in India on 25 December 1968 in which a group of around 44 people, the families of striking Dalit village labourers, were murdered by a gang, allegedly led by their landlords. The chief accused was Gopalakrishnan Naidu.

The Daeyeonggak Hotel fire was a skyscraper fire in Seoul, South Korea, on 25 December 1971, which killed 164 people and injured 63. It remains the deadliest hotel fire in history.

EgyptAir Flight 864 was an international scheduled passenger flight from Rome Fiumicino Airport to Tokyo International Airport, via Cairo, Bombay, and Bangkok. On 25 December 1976, the Boeing 707 crashed into an industrial complex in Bangkok. All 52 people on board were killed, and 19 plus on the ground in the crash.

Menachem Begin was an Israeli politician who founded the political parties Herut and Likud and served as prime minister of Israel from 1977 to 1983.

Iraqi Airways Flight 163 was a Boeing 737-200, registered YI-AGJ, that was hijacked in 1986. On 25 December 1986, en route from Baghdad's Saddam International Airport to Amman, Jordan, Flight 163 was hijacked by four men. Iraqi Airways security personnel tried to stop the hijackers, but a hand grenade was detonated in the passenger cabin, forcing the crew to initiate an emergency descent. Another hand grenade exploded in the cockpit, causing the aircraft to crash near Arar, Saudi Arabia, where it broke in two and caught fire.

The Romanian revolution was a period of violent civil unrest in the Socialist Republic of Romania during December 1989 as a part of the revolutions of 1989 that occurred in several countries around the world, primarily within the Eastern Bloc. The Romanian revolution started in the city of Timișoara and soon spread throughout the country, ultimately culminating in the drumhead trial and execution of longtime Romanian Communist Party (PCR) General Secretary Nicolae Ceaușescu and his wife Elena, and the end of 42 years of Communist rule in Romania. It was also the last removal of a Marxist–Leninist government in a Warsaw Pact country during the events of 1989, and the only one that violently overthrew a country's leadership and executed its leader; according to estimates, over one thousand people died and thousands more were injured.

Mikhail Sergeyevich Gorbachev was a Soviet and Russian politician who was the last leader of the Soviet Union from 1985 until the country's dissolution in 1991. He served as General Secretary of the Communist Party from 1985, and additionally as head of state from 1988. Ideologically, he initially adhered to Marxism–Leninism, but moved towards social democracy by the early 1990s.

On the night of December 25, 1996, six‑year‑old JonBenét Patricia Ramsey was killed in her family's home at 755 15th Street in Boulder, Colorado. She was reported missing early on December 26, and her body was found about seven hours later in the basement of the house. Her skull had an 8.5 inch fracture on the right side of her head, and a garrote was tied around her neck. The autopsy determined that the cause of death was asphyxia by strangulation associated with craniocerebral trauma, and the case was ruled a homicide.

Cubana de Aviación Flight 310 was a scheduled international flight from José Martí International Airport, Havana, Cuba, to Arturo Michelena International Airport, Valencia, Venezuela, which crashed near Bejuma, Venezuela, on 25 December 1999. All 10 passengers and 12 crew on board were killed.

UTA Flight 141 was a scheduled international passenger flight operated by Guinean regional airline Union des Transports Africains de Guinée (UTA), flying from Conakry to Dubai with stopovers in Benin, Libya and Lebanon. On Christmas Day 2003, the Boeing 727–223 operating the flight struck a building and crashed into the Bight of Benin while rolling for take off from Cotonou, killing 141 people. The crash of Flight 141 is the deadliest crash in Benin's aviation history.

The Beagle 2 is an inoperative British Mars lander that was transported by the European Space Agency's 2003 Mars Express mission. It was intended to conduct an astrobiology mission that would have looked for evidence of past life on Mars.

Cassini–Huygens, commonly called Cassini, was a joint space-research mission by NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI) to send a space probe to study the planet Saturn and its system, including its rings and natural satellites. The Flagship-class robotic spacecraft comprised both NASA's Cassini space probe and ESA's Huygens lander, which landed on Saturn's largest moon, Titan. Cassini was the fourth space probe to visit Saturn and the first to enter its orbit, where it stayed from 2004 to 2017. The two craft took their names from the astronomers Giovanni Cassini and Christiaan Huygens.

The Siberian tiger or Amur tiger is a population of the tiger subspecies Panthera tigris tigris native to Northeast China, the Russian Far East, and possibly North Korea. It once ranged throughout the Korean Peninsula, but was eradicated in the area during the period of Japanese rule between 1910 and 1945, and currently inhabits mainly the Sikhote-Alin mountain region in the southwest of Primorsky Krai in the Russian Far East. In 2005, there were 331–393 adult and subadult Siberian tigers in this region, with a breeding adult population of about 250 individuals. The population had been stable for more than a decade because of intensive conservation efforts, but partial surveys conducted after 2005 indicate that the Russian tiger population was declining. An initial census held in 2015 indicated that the Siberian tiger population had increased to 480–540 individuals in the Russian Far East, including 100 cubs. This was followed up by a more detailed census, which revealed there was a total population of 562 wild Siberian tigers in Russia. As of 2014, about 35 individuals were estimated to be in the international border area between Russia and China. As of 2022, about 756 Siberian tigers, including 200 cubs, were estimated to inhabit the Russian Far East.

The Antonov An-72 is a transport aircraft, developed and produced by the Ukrainian aircraft manufacturer Antonov. The An-72 and the related An-74 get their nickname, Cheburashka, from the large engine intake ducts, which resemble the oversized ears of the popular Soviet animated character of the same name.

Air Bagan Flight 011 was a scheduled domestic passenger flight of a Fokker 100 twinjet from Yangon to Heho, Myanmar. On 25 December 2012, the aircraft crash-landed short of the runway at Heho Airport in fog, coming to a stop in a paddy field and bursting into flames. One of the 71 people on board and a motorcyclist on the ground were killed and more than 10 people were injured.

The Ministry of Defence of the Russian Federation is the governing body of the Russian Armed Forces. The president of Russia is the commander-in-chief of the forces and directs the activity of the ministry. The minister of defence exercises day-to-day administrative and operational authority over the forces. The General Staff of the Armed Forces executes the instructions and orders of the president and the defence minister.

Typhoon Phanfone, locally named Ursula, was a strong and deadly tropical cyclone which traversed the Philippines on Christmas Eve and Christmas Day in 2019, the first typhoon to do so since Nock-ten in 2016.

On December 25, 2020, Anthony Quinn Warner detonated a recreational vehicle (RV) bomb in downtown Nashville, Tennessee, United States, killing himself and injuring eight others, damaging dozens of buildings in the surrounding area. The incident took place at 166 Second Avenue North between Church Street and Commerce Street at 6:30 am, adjacent to an AT&T network facility, resulting in days-long communication service outages.

The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. It is the largest telescope in space, and is equipped with high-resolution and high-sensitivity instruments, allowing it to view objects too old, distant, or faint for the Hubble Space Telescope. This enables investigations across many fields of astronomy and cosmology, such as observation of the first stars and the formation of the first galaxies, and atmospheric characterization of potentially habitable exoplanets.

Azerbaijan Airlines Flight 8243 was a scheduled international passenger flight from Heydar Aliyev International Airport in Baku, Azerbaijan, to Kadyrov Grozny International Airport near Grozny, Russia, operated by Azerbaijan Airlines. On 25 December 2024, the Embraer E190 operating the flight was severely damaged by a Russian surface-to-air missile during the aircraft's approach to Grozny. The pilots attempted to divert but the hydraulic system failed, leading to a loss of control and ultimately a crash near Aktau International Airport in Aktau, Kazakhstan, with 62 passengers and 5 crew on board. Of those 67 people, 38 died in the accident, including both of the pilots and a flight attendant, while 29 people survived with injuries.