Can you post the list of options and then I might be able to answer :)
B - The Aztec government was made up of city-states that were loyal to their kings
President Truman authorized the atomic bomb.
Answer:
someone who studies history
Explanation:
That process was called VIETNAMIZATION.
President Nixon was the one who instituted the Vietnamization policy, which emphasized that the United States must empower South Vietnamese forces to assume more combat duties.
By the time the US was shifting emphasis to this sort of policy, it was too late to stave off the victory of the North Vietnamese and Viet Cong forces. The US eventually withdrew its forces from Vietnam in 1973, and by 1975, Saigon (in South Vietnam) fell to the North Vietnamese communist forces.