I think it is d. "was on the fo the bloodiest battles of the war"
They are maybe a immigrant. Idk
There a couple of Central Plateaus in the world, but perhaps the relevant one is the one in Mexico. It's called Altiplano central, it is a <span>flat, high land surrounded by mountains and also it is the center of population in Mexico (with Mexico City in it it would be a surprise if it weren't...).
Other Central Plateus exist in Brazil and Haiti among others.
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