The Netherlands became the first country in the world to allow same-sex marriage.
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Bonnie and Clyde shot two highway patrolmen outside Grapevine, Texas.
The Royal Canadian Air Force was formed out of the Canadian Air Force.
Canada formed the territory of Nunavut to recognize the traditional lands of their native Inuit people.
The Nagorno-Karabakh conflict between Armenia and Azerbaijan began.
NASA celebrated April Fool's Day by telling the world that they found water on Mars.
