Please help . like this is umm

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?

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.

Identify and explain one piece of evidence to show how the european nearest some contributed to the role of europeans in the indian ocean trade