Google announced that it had acquired YouTube for $1.65 billion.
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Hoover Dam began producing electricity and transmitting it to Los Angeles, California.
The Dublin and Kingstown Railway officially opened.
German Chancellor Angela Merkel visited Athens and was met by 50,000 protestors.
14-year-old girls-rights activist Malala Yousafzai was shot three times on her way to school.
Bruce Springsteen released his album 'Tunnel of Love.'
