A historian notes that many African Americans moved from southern rural areas of the United States to large urban centers farther north between 1910
and 1930. He hypothesizes that the availability of high wages in northern
factories was the fundamental cause of this population shift. Which two
themes would this historian focus on as he researches his hypothesis?
A. The themes of American and national identity, and of work,
exchange, and technology
B. The themes of politics and power, and of culture and society
C. The themes of migration and settlement, and of America in the
world
D. The themes of migration and settlement, and of work, exchange,
and technology

The answer to this question is option D: The themes of migration and settlement, and of work, exchange,  and technology

The themes can be found in the reasons why the African Americans were moving.

They were migrating and moving to these large cities because of better paying work. The north had factories with high wages.

The jobs where available in factories. This shows that they were moving towards technologically advanced areas.

The population shift tells about an exchange from the south to the north. The people are leaving the South and moving into the north.

Read more

i told you before its c

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.