Which factors contributed to the start of world war one?

What could have been done to stop the illegal voting? what about the violence?

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.

What do the differing approaches of booker t. washington and w. e.b du bois suggest about their views of american society?