I'd say C because the other three wouldn't lead to it being the leading occupation, if anything, it would make it harder to conditions other than C
Answer:
75 to 200 million europeans died
One political similarity between Europe and South Asia from the period 400-1450 was that they both had the aristocracy which dominated the political systems, and provided order and unity among the population. Another similarity is that religious beliefs influenced power.
To make it easier to govern at a smaller level. It also makes sure one person doesn’t have too much power and gives accurate results with what the people want.