Well, all the civilizations did sacrifices, but ( you may need to check just be sure) i think the Incans did the least of it. The Mayans did it a bit more regularly then the Incans and the Aztecs did the most. hope this helps!
a and b I think if I’m wrong then sorry!! Good luck
It would be that "c. the chairman of the veterans' bureau laundered nearly 200$ million" that was not a scandal associated with the harding administration, since this in fact happened during the previous term.
B i would assume as it was the us army that helped significantly with the d day invasion as the us military were advanced in training
No because it encourages inequality it further influences people's self esteem and worth.