68: Roman Emperor Nero commits suicide, imploring his secretary Epaphroditus to slit his throat to evade a Senate-imposed death by flogging

721: Odo of Aquitaine defeats a Umayyad Muslim army at the Battle of Toulouse, halting Arab expansion in Western Europe

1549: Book of Common Prayer is adopted by the Church of England

1815: Congress of Vienna ends after reshaping the political map of Europe

1856: 500 Mormons leave Iowa City, Iowa, and head west for Salt Lake City, Utah, carrying all their possessions in two-wheeled handcarts

2019: Over 1 million people protest in Hong Kong against proposed new laws for extradition to China in one of the largest-ever protests in the city

Source: Onthisday.com