What was the purpose of the Monroe Doctrine?
O It was a treaty for the United States to buy land.
O It increased trade with other nations in Europe and Asia.
It warned European nations to stay away from Western nations.
It was a policy to increase the size of the U. S. military.

Right choice is:

It warned European nations to stay away from Western nations.

Explanation:

The Monroe Doctrine is a concept that sees any intervention of extrarregional powers (mainly of Europe in 1823) in the affairs of the nations of the Western Hemisphere as a threat to the United States´ security. It also states that the US would not intervene in the conflicts or issues of the European powers.

c. mass = force / accellaration

step-by-step explanation:

the hollywood film industry of 1950 was threatened on several different fronts. television broadcasting was rapidly becoming the dominant entertainment medium in the united states. the paramount anti-trust consent decree requiring separate ownership for production companies and theater chains had gone into effect on 1 january 1950. large numbers of young men and women were marrying, having children, and moving to the suburbs, which affected the viability of downtown first-run movie theaters. foreign revenues were endangered by protectionist tactics including quota systems, high taxes, and blocked funds. finally, the morality and patriotism of hollywood films and filmmakers were under attack from government, religious, and citizens' groups.

explanation: