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National League forms
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American League forms
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The first All-Star Game was held as part of the 1933 World's Fair in Chicago, Illinois
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Jackie Robinson breaks the color barrier by being the first player to play in the Major Leagues. This move brought attedence of Afican Americans.
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During this period several teams either joined one of the leagues or relocated
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During this time period the NFL was gaining in popularity so baseball owners decided as they expanded or joined the league that they would build multi-purpose stadiums to house more than one sport at a time.
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The first MLB Draft is held. The June Regular and the August Legion
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the American League, which had been suffering from much lower attendance than the National League, sought to increase scoring even further by initiating the designated hitter (DH) rule
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The American League and The National League merge together
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The MLB Network was broadcast for the first time in over 50 million homes
