Kanye West claimed that African-American slaves in the US remained slaves by choice.
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The FBI's most wanted man, Osama bin Laden, was killed by the US Navy Seals and CIA operatives in Abbottabad, Pakistan.
139,000 people lost their lives when Cyclone Nargis made landfall in Myanmar.
The Writers Guild of America went on strike after a labor dispute.
The territory of Oklahoma was incorporated.
The Stanley Cup Finals took place with the Toronto Maple Leafs beating the Montreal Canadiens.
