When did the cubs first win the world series?
No context provided
What date did the cubs first win the world series?
October 12, 1907
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On which world series did the cubs first win the world series?
1907 World Series
Chicago Cubs
https://en.wikipedia.org/wiki/Chicago%20Cubs
The Chicago Cubs are an American professional baseball team based in Chicago. The Cubs compete in Major League Baseball (MLB) as part of the National League (NL) Central division. 
Chicago Cubs
The 1907 World Series featured the Chicago Cubs and the Detroit Tigers, with the Cubs winning the Series four games to none (with one tie) for their first championship. 
1907 World Series
Saturday, October 12, 1907, at Bennett Park in Detroit, Michigan Chicago wrapped up the series with a 2–0 victory on "Three-fingered" Mordecai Brown's seven-hit shutout.
1907 World Series
The Chicago Cubs are an American professional baseball team based in Chicago, they compete in Major League Baseball as part of the National League Central division. Throughout the club's history, the Cubs have played in a total of 11 World Series. The 1907 World Series featured the Chicago Cubs and the Detroit Tigers, with the Cubs winning the Series four games to none, with one tie, for their first championship. On Saturday, October 12, 1907, at Bennett Park in Detroit, Michigan, Chicago wrapped up the series with a 2–0 victory. 