What does "reinstatement" mean? what does it mean that the church seeks to "reinstate" instead of "cast off" or condemn people?

The north american colonies experienced a steady increase in population since the first settlement in jamestown in 1607. by 1775, the colonies' population was around 2,500,000, and most of the colonists lived east of the allegheny mountains. how did geography influence the settlement of america's first colonies?