Strong's territory. As early as 1910, Foster started talking about reviving the concept of an all-black league. The one thing he was insistent upon was that black teams should be owned by black men. This put him in direct competition with Strong. After 1910, Foster renamed his team the Chicago American Giants to appeal to a larger fan base. During the same year, J. L. Wilkinson started the All Nations traveling team. The All Nations team would eventually become one of the best-known and popular teams of the Negro leagues, the Kansas City Monarchs. On April 6, 1917, the United States entered World War I. Manpower needed by the defense plants and industry accelerated the migration of blacks from the South to the North. This meant a larger and more affluent fan base with more money to spend. By the end of the war in 1919, Foster was again ready to start a Negro baseball league. On February 13 and 14, 1920, talks were held in Kansas City, Missouri, that established the Negro National League and its governing body the National Association of Colored Professional Base Ball Clubs. The league was initially composed of eight teams: Chicago American Giants, Chicago Giants, Cuban Stars, Dayton Marcos, Detroit Stars, Indianapolis ABC's, Kansas City Monarchs and St. Louis Giants. Foster was named league president and controlled every aspect of the league, including which players played on which teams, when and where teams played, and what equipment was used (all of which had to be purchased from Foster). Foster, as booking agent of the league, took a five percent cut of all gate receipts. Golden age On May 2, 1920, the Indianapolis ABCs beat Charles "Joe" Green's Chicago Giants (4–2) in the first game played in the inaugural season of the Negro National League, played at Washington Park in Indianapolis. But, because of the Chicago Race Riot of 1919, the National Guard still occupied the Giants' home field, Schorling's Park (formerly South Side Park). This forced Foster to cancel all the Giants' home games for almost a month and threatened to become a huge embarrassment for the league. On March 2, 1920, the Negro Southern League was founded in Atlanta, Georgia. In 1921, the Negro Southern League joined Foster's National Association of Colored Professional Base Ball Clubs. As a dues-paying member of the association, it received the same protection from raiding parties as any