Napoleon Bonaparte left Egypt to return home to France.
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Chris Messina Tweeted #barcamp, which became the first use of a hashtag on Twitter.
The World Council of Churches (WCC) was founded with 147 churches from 44 countries.
The largest farm worker strike in US history began.
During World War I, Japan officially declared war on Germany.
During the French Revolution, a mass levy was adopted, making it compulsory for any able-bodied men aged 18 to 25 to join military service.