Ultimately, Joe McCarthy was using weak evidence to accuse people of being communist. Through his televised questioning of the army, many of whom were war heroes, the public saw the mean-spiritedness of McCarthy’s campaign. Polls showed the American people thought McCarthy devious in his attack of the army. Fed up, McCarthy’s colleagues censured him for dishonoring the Senate, and the hearings came to a close.
this is the correct answer.....
In a feudal system, a vassal, akin to a serf in most contexts, in general worked land on a lord's fiefdom in exchange for some of the produce from the land and some military protection.
A source written during the time period
The first is the best option.
It is true that a lot of cultural aspects of Africa have been lost, most specifically, religion.
If we look at imperialism, its height came after the main period of African slave trade (second answer is false).
The tribal conflicts are still very ripe in Africa, and often they're fueled by the carefulness boundary drawing of countries in Africa- the third answer is false.
More self-rule is also false, if anything, imperialism brought less self-rule