President Richard Nixon's foreign policy was called the Nixon Doctrine. It stated that the United States would stand as the nuclear umbrella for it's allies, if ever something went seriously wrong and their security was threatened. However, he also stated that their security was something the allies would have to take care of themselves and that he would not interfere unless he was asked to. Ronald Reagan had more of a harsher stance and often supported authoritarian governments if he thought it would be more of a benefit to the United States and would oppose communism, as he was worried about the rise of communism and the Soviet Union. He was heavily involved in conflicts abroad, in contrast to Nixon.
Franklin Roosevelt’s New Deal reforms sparked an ongoing national debate on the extent to which the federal government should intervene in big business and the lives of average Americans.
Based on my research(since the choices were not given), the United States tried to influence Vietnam’s national elections in 1956 when they supported Ngo Dinh Diem as president in South Vietnam. H<span>e was then named Prime Minister of the State of Vietnam during the Nguyen dynasty.</span>
They need a strong leader.
helped the Aztec farm more productive - chinampas
helped the Inca travel long distances and communicate with their neighbors - rope bridges
helped the Maya view astronomical phenomena such as eclipses with the naked eye - pyramaid at Chichen Itza