What is the most accurate summary of this poster from world war ii?

Which of the following was a similarity between classical mesoamerican and south american civilizations ?

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.

What was one effect of the rise of factories during the industrial revolution