February 28 in History

Emperor Gaozu of Han, personal name Liu Bang, was the founder and first emperor of the Han dynasty.

The Aztecs were a Mesoamerican civilization that flourished in central Mexico from 1300 to 1521. The Aztec people included different ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl language. Aztec culture was organized into city-states (altepetl), some of which joined to form alliances, political confederations, or empires. The Aztec Empire was a confederation of three city-states established in 1427: Tenochtitlan, Tetzcoco, and Tlacopan, previously part of the Tepanec empire, whose dominant power was Azcapotzalco. Although the term Aztecs is often narrowly restricted to the Mexica of Tenochtitlan, it is also broadly used to refer to Nahua polities or peoples of central Mexico in the pre-Hispanic era, as well as the Spanish colonial era (1521–1821).

Elias Lönnrot was a Finnish polymath, physician, philosopher, poet, musician, linguist, journalist, philologist and collector of traditional Finnish oral poetry. He is best known for synthesizing the Finnish national epic, Kalevala from short ballads and lyric poems he gathered from Finnish oral tradition during several field expeditions in Finland, Russian Karelia, the Kola Peninsula and Baltic countries. In botany, he is remembered as the author of the 1860 Flora Fennica, the first scientific text written in Finnish rather than in Latin.

A protectorate, in the context of international relations, is a state or dependent territory that foregoes an independent foreign policy in favour of alliance with a protecting power, normally in order to ensure its defence against regional aggressors. It is a dependent territory that enjoys autonomy over most of its internal affairs, while still recognizing the suzerainty of a more powerful sovereign state without being a possession. In exchange, the protectorate accepts treaty obligations which bind it to the protecting power in foreign policy. Protectorates are established formally by a treaty between the powers involved. Under certain conditions—as with Egypt under British rule (1882–1914)—a state can also be labelled as a de facto protectorate or a veiled protectorate.

The February 28 incident was an anti-government uprising in Taiwan in 1947 that was violently suppressed by the Kuomintang–led Nationalist government of the Republic of China (ROC). Directed by provincial governor Chen Yi and president Chiang Kai-shek, thousands of civilians were killed beginning on February 28. The incident is considered one of the most important events in Taiwan's modern history and was a critical impetus for the Taiwan independence movement.