Taylor Swift’s third studio album “Speak Now” was released. It won Billboard’s 2011 Album of the Year.
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Scientists in India discovered a 152-million-year-old fossil of an extinct marine reptile called the ichthyosaur.
Italian astronomer Giovanni Cassini discovered Iapetus, Saturn's third-largest moon.
John Hancock became the first Governor of Massachusetts after winning 90% of the votes in the Massachusetts Constitution.
Sid Meier's Civilization IV was made available to PC players in North America.
The British singer Cliff Richard was knighted by Queen Elizabeth II.
