451: Roman General Flavius Aetius defeats Attila the Hun at The Battle of the Catalaunian Plains (Chalons-sur-Marne), halting Hun invasion of Roman Gaul

622: Islamic Prophet Muhammed/Abu Bakr arrives in Jathrib (Medina)

1519: Spanish expedition led by Portuguese navigator Ferdinand Magellan sets off on the 1st successful circumnavigation of the globe (Magellan killed on route)

1854: Battle of the Alma: first major battle of Crimean War. British and French alliance defeat the Russians

1990: Both East and West Germany ratify reunification

2001: In an address to a joint session of Congress and the American people, US President George W. Bush declares a “war on terror”

2019: Students from 185 countries stage the world’s largest-ever protest on climate change culminating in Manhattan rally led by Greta Thunberg

Source: Onthisday.com