Massachusetts was run by a very religious group of people (commonly referred to as the pilgrims) and they were what made up most of the Massachusetts colony, so their churches were, like EVERYWHERE, and they basically told other people "your religion sucks, join us" and the church basically ran the colony, does that make any sense?☺️
The increasingly poor treatment of the Indians and the uncertainty of what was going to happen
The Caspian Sea. :) It's the world's largest inland body of water.