Answer:
Diffusion is a process whereby something spreads more widely. In cultural terms, this means that as an influential trend begins in one area, people in other areas pick up on it and try to imitate or adapt it.
<span>C. It allowed for expansion of slavery into the North</span>
The Americans wanted to reduce the risk of nuclear weapons in other nations because of the potential risk of a nuclear warfare but they also declared that they have a right to keep them, due to the fact they never threatened to use them against others.