A). The division of Germany among the Allied powers.
The Revenue Act of 1926 reduced income tax and eliminated public access to the federal tax return.
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:
Roman sports used to be a lot more brutal, including gladiator fights and tons of killing, as well as their 'Olympics' which would just entail men, performing naked. Over time they switched to a more moral and less brutal entertainment, leading us to today and the universal Olympics.
Hope this helps!