1999
The Negro leagues were US professional baseball leagues. The term is usually used to include 7 leagues, also called "Negro Major Leagues" which began in 1920.
It depends. Rules and regulations can differ depending on what state, what city, and individual pee wee leagues.
Negro Leagues Baseball Museum was created in 1990.
George Khoury Association of Baseball Leagues was created in 1934.
Individual cities have their own semi-pro leagues, but those are not major, so I assume you are asking which capitals have Major League Baseball teams. Phoenix (Arizona Diamondbacks) Denver (Colorado Rockies) Atlanta (Braves) Boston (Red Sox)
Negro Leagues Baseball - 1946 is rated/received certificates of: USA:Approved
One upon a time, there were three baseball leagues.
Basketball and baseball
Not in MLB. Other leagues such as youth leagues or co-rec leagues may have different rules.
Minor Leagues.
The Grapefruit Leagues is the food-related idiom for pre-season leagues.
The web address of the Negro Leagues Baseball Museum is: http://www.americanjazzmuseum.org