PL HELP1 How did the people of ancient China adapt to the land?

A. Port cities were built with special materials to survive typhoons.
b. Flood controls like dams and canals were created to manage the rivers.
C. Land in river valleys was managed by the government to prevent excessive farming.
D. Ancient Chinese civilizations cut roads along the mountains to make them passable.

its a map of something

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: