I believe it is A.) The seperation of church and state.
The similarities between Americans and Africans in the early centuries was that both America and Africa became the first areas of the world to encounter important outcomes from European expansion. They were similar to the fact that Europeans wanted to extract the natural resources from both the countries.
They were different from each other in a way that colonialism affected Africa and transformed America.
A loss in one stock only means a partial loss in the total investment.