Francisco de Orellana's Voyage down the Amazon (1541-1542)
Orellana's party became the first Europeans to travel the length of the Amazon, reaching the Atlantic in August 1542.
Every Chronicle article on world history, newest first: battles, empires, disasters, discoveries and revolutions.
Orellana's party became the first Europeans to travel the length of the Amazon, reaching the Atlantic in August 1542.
About 69,000 people were killed, around 18,000 went missing and nearly 5 million were left homeless; China launched a vast three-year reconstruction programme.
Eleven EU countries replaced their national currencies with the euro and handed monetary policy to the European Central Bank.
Thirteen civilians were killed on the day and another died months later; the shootings deepened the Troubles and were declared unjustified by the Saville Inquiry in 2010.
Berners-Lee created HTML, HTTP, URLs, the first web server and the first browser; CERN released the technology royalty-free in 1993, allowing the Web to spread worldwide.
The emperor was deposed, the monarchy was abolished in 1975 and a Marxist military regime ruled Ethiopia until 1991.
More than three and a half years of bombing damaged North Vietnam heavily but failed to break its will or stop the flow of men and supplies to the South.
Lava flows covered Cuicuilco and some 70-80 square kilometres of the southern Valley of Mexico, ending the settlement's long occupation.
Sima Qian completed a 130-chapter history of China from the legendary Yellow Emperor to his own day, which became the model for the official dynastic histories.
The manuscript is the oldest surviving Indian mathematical manuscript and an early witness to a written zero, though its exact date is still debated.
The plot was crushed; five conspirators were executed in Rome without trial and Catiline died in battle at Pistoria in early 62 BC.
The Histories became the first great prose history in Western literature and earned Herodotus the title father of history.