Yeah your answer is A as you can see by the picture ^^
lol
Answer:
African Americans
Explanation:
In the middle of the century, northern manufacturing extended the use of power-driven machines to a wider range of commodities. Agricultural mechanization throughout the 20th century led to dramatic shifts in farming. Tractors, combines, harvesters, and other farming equipment are helping farmers grow more.
Orogressive movement of Africans Americans northward starting at the beginning of the twentieth century was a result of economic boom in the this areas, they had to migrate and find jobs that can feed them and their families.
They Hunted and they built there own house and they survived off of what they could make and do.
The increase of technology used during the construction of the railroads and factories is considered the second Industrial Revolution. This is because of the many inventions and help of transportation use. Hope this helps.
Central pacific railroad built the transcontinental railroad eastward from Sacramento California by hiring 10,000 chinese laborers to work on the tracks
