11. what was the name of the proposed law that would ban slavery in all territory won in the mexican-american war? a. the missouri compromise b. the wilmot proviso c. the kansas-nebraska act d. the mexican territory act 12. which of the following was an impact of industrialization on american society? a. more americans were moving to live in the country. b. more americans were moving to live in the cities. c. industrialization reduced the numbers of immigrants. d. most americans became very wealthy. 13. what was the name of the belief system that considered wealth to be a measure of "fitness"? a. moral relativism b. revivalism c. segregation d. social darwinism

The correct options are as follows:
11. B.
The Wilmot Proviso refers to a proposed American law that seek to abolish slavery from all the territories that are won from Mexico in the Mexican war. David Wilmot, who was one of the of the congress member from Pennsylvania was the one who proposed this law and the law was passed in 1846. The southerners opposed this law and the opposition that surrounded this law was one of the reasons that generated the American civil war.
12. B.
During the era of industrialization in America, most of the industries that were created were located in the cities. So people who desire to work in those industries had to leave their rural areas and country homes and traveled to the cities in order to look for work. This made many people to leave their farm works and migrate to the cities in search of greener pastures.
13. D.
Social Darwinism is a theory which seek to subjects humans to the principle of natural selection, which Charles Darwin subjected  plants and animals to. The theory holds that, the rich are the strongest in the society while the poor are the weakest, it believes that the strongest should be pruned to produce more while the weakest should be eliminated.