The need for skyscrapers were important because more people were moving to cities so they need more room.
The Aztecs would be your answer.
The Maya were in the south of Mexico and the other two, the Ghaznavids and the Abbasids describe Asian peoples, so not peoples of the New World.
Wrong that was in prison camp an labor camps, in ghettos it was mostly starvation and illness
I believe it is option C
Hope this helps
