American singer Selena Gomez released her second full-length studio album “Revival.”
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Google announced that it had acquired YouTube for $1.65 billion.
The Dublin and Kingstown Railway officially opened.
The South Korean alphabet, called 'Hangul,' was published.
14-year-old girls-rights activist Malala Yousafzai was shot three times on her way to school.
Andrew Lloyd Webber's musical 'Phantom of the Opera' was premiered in London with stars Michael Crawford and Sarah Brightman.
