How many countries in the caribbean speak spanish?

Ineed on 2-4 i want y’all to reply to this question so i can turn this into my teacher tomorrow

What was a result of the use of farming machines

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.