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What happened today (April 21) in history? Key events to look back on

From the founding of Rome to modern capitals and literary icons, April 21 brings together moments that shaped history and culture.

By Pritha Chakraborty

Apr 21, 2026 09:54 IST

Some days coincide with happenings that contributed significantly towards empires, politics, and art. The following is an exploration of five significant events that occurred on this day of the year. April 21 is associated with happenings involving the creation of cities, politics, and literature.

Rome traditionally founded (753 BC)

According to Roman tradition, Rome is said to have been founded by Romulus on April 21, 753 B.C. This day is still celebrated in Rome as the foundation day of Rome.

Queen Elizabeth II born (1926)

Queen Elizabeth II, the queen of Britain, was born on April 21, 1926. She is the longest-serving queen in the history of Britain, reigning for more than 70 years.

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Mark Twain dies (1910)

The famous American author Mark Twain, who wrote books like "Adventures of Huckleberry Finn," passed away on April 21, 1910. His works still have a significant impact on American literature.

Brasília officially inaugurated as Brazil’s capital (1960)

On April 21, 1960, Brasília became the capital city of Brazil. It is a city that came into existence after being meticulously planned.

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Tiradentes Day observed in Brazil

April 21 is marked as Tiradentes Day in Brazil, paying tribute to Joaquim José da Silva Xavier, who was a national hero hanged on April 21, 1792, for participating in an anti-colonial uprising against Portugal.

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