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Matt Rourke, AP
Fireworks explode over the Philadelphia Museum of Art and a statue of George Washington during an Independence Day celebration, Thursday, July 4, 2013, in Philadelphia. (AP Photo/Matt Rourke)

From hot dog eating contests at Coney Island to a naturalization ceremony in Seattle and fireworks on the National Mall, Americans — and new Americans — gathered Thursday to celebrate the country's history with food, fun and fireworks.

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