Events on April 6 in history

World War I: The United States declares war on Germany (see President Woodrow Wilson's address to Congress).

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22 Jan

Woodrow Wilson
World War I: President Woodrow Wilson of the still-neutral United States calls for "peace without victory" in Europe.
15 Mar

Nicholas II of Russia
Tsar Nicholas II of Russia abdicates the Russian throne ending the 304-year Romanov dynasty.
2 Apr

Woodrow Wilson
World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany.
5 Jun

Conscription
World War I: Conscription begins in the United States as "Army registration day".
27 Jul

Battle of Passchendaele
The Allies reach the Yser Canal at the Battle of Passchendaele.