Why did Major League Baseball owners support segregation by 1890?

They feared that white audiences would not pay to watch African American players.

They feared that African Americans would not pay to watch white players. They wanted to pay their players less money than players in the Negro leagues earned. They feared that white audiences would not pay to watch African American players

Explanation:

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.