The Austrian Archduke Franz Ferdinand was shot by assassins in Sarajevo, the capital of Bosnia.
The First World War ended in 1918.
It lasted for four years, beginning in 1914.
The British Empire was the largest empire in history.
It covered 35.5 million square kilometers of land – around 24% of the Earth's land mass. The largest contiguous empire ever (that is, the largest empire in which every part is connected) was the Mongol empire, which was 24 million square kilometers of land mass, or around 16% of the Earth's land– which also makes it the second largest empire ever.
The Korean War started in 1950 and ended in 1953.
It was fought between North and South Korea.
This is known as the Xinhai Revolution.
It happened in 1911 when the imperial system ended with the toppling of the Qing Dynasty and the establishment of the Republic of China.
The Aztec empire fell in the 16th century.
This happened when Cuauhtemoc, the Aztec ruler, surrendered to Hernan Cortes, the Spanish conquistador in 1521.
Hong Kong gained independence from the UK in 1997.
JFK was assassinated in 1963 in Dallas, Texas.
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