Which best describes how the great migration affected northern cities?
a. northern cities changed very little as african americans moved in.
b. northern cities became as segregated as the southern cities.
c. northern cities forced african americans into segregated neighborhoods.
d. northern cities grew more diverse as african americans shared their culture.

d. northern cities grew more diverse as African Americans shared their culture.

The Great Migration occurred between 1916 and 1970. It describes the movement of six million African Americans from the Southern United States to the Northeast, Midwest and West. These people were usually moving from rural areas to urban ones. It was one of the largest and fastest internal migrations in history. In 1900, more than 90% of African Americans lived in the South, but by the end of the migration, little more than 50% remained there.

explanation:

there are two statements that are incorrect.

1. the marshall plan was a lend lease program. it was an economic plan that europe redevelop itself after wwii.

2. einstein didn't really do anything to further the allied cause in building the bomb. he merely sent a letter to fdr telling him (in 1939) that if the united states entered the war, perhaps it would be wise to build the bomb before germany did. i would say this answer is incorrect, but when america entered the war 2 years later, fdr thought it might be a good idea to take einstein's advice.

the 4th choice is definitely so wrong that is likely the single answer of this question

the images of war are haunting