Answer:
To assert that legal segregation is harmful to children.
Explanation:
This purpose can be backed from the following lines from the excerpt:
Quote, "... their race generates a feeling of inferiority... for [because of] the policy of separating the races is usually interpreted as denoting the inferiority of African Americans".
To create artificial separation creates artificial rifts between what the students of different races may distinguish between the possible as well as that which they cannot achieve. In this, if there is a outwardly limiting factor that is not controlled by the student itself but by the state, it would create a societal boundary that would, quote, "affect the motivation of a [African American] child to learn".
I have no clue man just go to page 331 and you will find the answer
The Nile River was a body of water that they severely needed because, both sides of Egypt had deserts on them.