A confederacy lacks a strong central authority; its main purpose is to protect member states from external threats while domestic affairs remain the responsibility of local governments. The Articles of Confederation created such a loose union among the first states, and the Constitution was later needed to create a federation.
Answer:
Early humans likely encountered several climatic changes that required them to migrate in search of animals for food, faced fluctuations in climate that alternated between droughts and floods, as well as environmental shifts that altered animal behavior.
Explanation:
The correct response is option b.
