ok lets start....
In the Western world, the Sino–Soviet split transformed the geopolitics of the bi-polar cold war into a tri-polar cold war; as important as the erection of the Berlin Wall (1961), the defusing of the Cuban Missile Crisis (1962), and the end of the Vietnam War (1945–1975), because the rivalry, between Chinese Stalinism and Russian coexistence, facilitated and realised Mao's Sino–American rapprochement, by way of the 1972 Nixon visit to China. Moreover, the Sino-Soviet split voided the Western political perception that "monolithic communism", the Eastern Bloc, was a unitary actor in geopolitics, especially during the 1947–1950 period in the Vietnam War, which led to U.S. military intervention to the First Indochina War (1946–1954).[5] Historically, the ideological Sino-Soviet split facilitated the Marxist–Leninist Realpolitik by which Mao established the tri-polar geopolitics
The Republican Party.
It was originally more progressive and anti-slavery (for example, Abraham Lincoln was the first Republican President). Over time, the Democratic Party became the more progressive party as 1) blacks shifted away from the Republican Party following the failure of Reconstruction in the South and 2) the Republican party aligned itself more with big business in later years.
The answer is A
hope this helps :)
Those who opposed the United States joining the League of Nations feared it would involve the US in more European affairs and cause more disconcert in America (aka more casualties).