Answer:As segregation tightened and racial oppression escalated across the United States, some leaders of the African American community, often called the talented tenth, began to reject Booker T. Washington’s conciliatory approach. W. E. B. Du Bois and other black leaders channeled their activism by founding the Niagara Movement in 1905. Later, they joined white reformers in 1909 to form the National Association for the Advancement of Colored People (NAACP). Early in its fight for equality, the NAACP used the federal courts to challenge disenfranchisement and residential segregation. Job opportunities were the primary focus of the National Urban League, which was established in 1910.
It seems as though as long as USA interests are left alone, nothing much would be done. Or if foreign involvement is bothering US interest then action will be taken as a last resort.
A subsequent theory, known as the “Kelp Highway,” came closer to the mark: As the from the East might have settled there before moving on to North America. “
