What was a new vehicle used during World War I?

What role did the catholic church play in the development of the heliocentric theory promoted by copernicus and galileo?

Why might the spanish government have approved of the encomienda system? a the system allowed for fair treatment of all under it, leading to a happy and prosperous colony. b the system used natives as slaves which meant the government was able to maximize their profit of exported goods. c the system allowed for mostly profitable trade within the different colonies. d the system was a great example of how to successfully run a colony, making spain a world power.

In 1840 which route is the easiest to take to travel from baltimore, maryland, to vandalia, illinois? a-chesapeake and ohio canal. b-wilderness road c-national road d-erie canal