The President in the executive branch can veto a law, but the legislative branch can override that veto with enough votes. The executive branch can declare Executive Orders, which are like proclamations that carry the force of law, but the judicial branch can declare those acts unconstitutional.
Definitely harmful, the Catholic Church is actually what really caused the problems because the interaction between the two made diseases spread, and fights begin when Native Americans didn't want to change
Cash money would lose integrity if no gold was there to represent and backup our currency value.