The Brooklyn Dodgers were an American Major League baseball team, active primarily in the National League (founded 1876) from 1884 until 1957, after which the club moved to Los Angeles, California, where it continues its history as the Los Angeles Dodgers. The team moved west at the same time as its longtime rivals, the New York Giants, also in the National League, relocated to San Francisco in northern California as the San Francisco Giants. The team's name derived from the reputed skill of Brooklyn residents at evading the city's trolley streetcar network. The Dodgers played in two stadiums in South Brooklyn, each named Washington Park, and at Eastern Park in the neighborhood of Brownsville before moving to Ebbets Field in the neighborhood of Flatbush in 1913. The team is noted for signing Jackie Robinson in 1947 as the first black player in the modern major leagues.\n\nWhen did the brooklyn dodgers become a team? Let's have some stream of consciousness first.
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The relevant sentence in the passage is: The Brooklyn Dodgers were an American Major League baseball team, active primarily in the National League (founded 1876) from 1884 until 1957, after which the club moved to Los Angeles, California, where it continues its history as the Los Angeles Dodgers. So, the answer is 1876.
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