Benjamin O. Davis Sr. became the first African American US Army brigadier general.
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Taylor Swift's third studio album 'Speak Now' was released. It won Billboard's 2011 Album of the Year.
London's last horse-drawn omnibus trip went from London Bridge Station to Moorgate.
Sid Meier's Civilization IV was made available to PC players in North America.
The Battle of Balaclava took place during the Crimean War.
The British singer Cliff Richard was knighted by Queen Elizabeth II.