Explain ONE difference in how the Incas and the Aztecs maintained their empires.

One difference in how the Incas and the Aztecs maintained their empires was how they handled conquered people. "In contrast to people living under the Aztecs, conquered people under the Inca did not have to pay tribute. Rather, they were subject to the mit’a system, mandatory public service."

porter is writing economic history because he is focusing on the cost of developing vaccines.

the catholic church withhold people's access to the bible during the middle ages.

people could go to church and listen to the teachings, but it was absolutely forbidden to own and/or read the books of both the old and new testaments. it was also prohibited to translate the books (which where originally in biblical hebrew) to any other language.

this was done so the church could remain in control of what their teachings were and to enhance their importance and power, while also being able to judge people's actions through information that was unavailable for the general public.