They’ve been playing a version of the World Series since the 19th century, and the modern World Series started in 1903. No one played the game outside of the States until the end of the 20th century at anything but a minor league equivalent level.
And the world’s best ballplayers come to play in the States.
Fair enough if it’s a long tradition. Was just weird to hear the Cubs players say “we are world champions”, especially as the US don’t win the Gold at every Olympics.
Although after watching the Cubs today they deserve the title anyway!