<span>nationalism/race or ethnicity</span>
The correct answer is B.
During the Kitchen Debate, Richard Nixon and Nikita Khrushchev were examining a model of a typical American home that the average American could afford. However, during this debate, Khrushchev challenged Nixon as he felt that not all Americans could have a home like this, while in the Soviet Union you would be guaranteed a home just for being a citizen. Khrushchev goes onto argue that even peasants in the Soviet Union can afford a standard house.
They encouraged people to settle because they were looking for an economic opportunity so not A and they mostly thought they were going to get rich from gold, so not B so I would say C