The answer is A.. a way of dividing society into classes with hard boundaries
Poor people didn't really get mummified. Only the rich and high class people!<span />
They were first dug in 1914.
A range of cultural, religious, and racial ideologies were used to justify imperialism, including Social Darwinism, nationalism, the concept of the civilizing mission, and the desire to religiously convert indigenous populations.
B is the closest answer to your question, so B is the answer :)