Help Please

The purpose of the comintern was a. to spy on anti-communist activity. b. to spread communism in other countries. c. to administer communist rule. d. to develop future communist leaders.

Did the spanish settlers and missions have a positive effect on world history? why, what did they do that was positive? why was the treaty of paris (1763) good for the world/world history? did the plymouth colony have a positive effect on world history? why, what did they do that was positive?

In an industry in which there are several providers of a type of good, why can one business not charge much higher prices for their goods?