I think the answer might be c
Same as other, New Rulers, Assassinations, People's Outrage
The triple entente peace treaty
It was difficult with the fact of institutionalized racism.
Explanation:
The appearance of black players in NFl was also something that had happened so late that it is quite mind boggling.
For the players to then grow and actually take up coaching positions was harder because of a few things.
One of them is that the white players and the administrators were wary of a black man taking decisions for the team and running things around.
The second was the fact that there was no way for a black person to enter administration enough to be considered for coaching
