When all people in a group vote on a proposition and then privilege the preference of the most people, the group decision is called:

Majority Rule

Explanation:

Majority rule is a rule used in making decision that goes for alternatives having the majority, usually over 50 percent of the votes. It is known as the binary decision rule and is mostly employed in the decision making process of influential bodies such as all the democratic nations legislature. Privilege in this type of decision making is giving to the group with the most people.

answer; by working independently, the states have a high likelihood of developing innovative solutions that can be employed in other states;