Ethnicity is like your culture. Language, race, and religion all play into your background and culture. However, politics are something that govern the country you live in -- they're not necessarily connected to your background. Therefore, politics would be the correct answer.
A.
soviet union expansionist ideology was to be curtailed by USA containment policy. This meant that whenever the soviet union tried to expand its dominion, the USA had to respond, often militarily resulting to numerous proxy wars.
b. detente
which was characterized by a period of easing tensions was a period of peaceful coexistence that saw the signing of several treaties during the Nixon administration and ended in 1979.
c. conflicts in the such areas as Cuba,Korean Peninsula,and Vietnam were crucial red days during the war.
They investigated the incident of Watergate very heavily.
This was very problematic, as it seemed that Nixon was spying on other campaigns. The Watergate scandal marked an abuse of power, so it was important that Congress investigated this and kept his power in check
The early Arabs were polytheistic , but now Islam is run under sharia law, or monotheistic, believing that allah is the one and only true god