What does Mr. Du Bois say has resulted from African Americans not insisting on political rights for 15 years?

This question seems to be incomplete. However, there´s enough information to find the right answer.

1. The disfranchisement of African Americans.

2. The establishment of a civil inferiority status for African Americans.

3. The decrease in educational aid for African Americans

Explanation:

In The Souls of Black Folk (Chicago, 1903),  W. E. B. Du Bois reacts to a speech by Washington, accusing him of calling for the submission of African Americans through conciliation, Du Bois explains that the reduced stress on the fight for political rights for African Americans that had occurred during the past 15 years had created the aforementioned effects.

“a committee reviews the bill and marks it up to make it more viable and to reflect interests 

answer: a tolerated diverse population

explanation: the city of baghdad formed to vast semi- circles on the right and left banks of the tigris twelve miles in a diameter.