D. He revised and organized laws
Answer:
In many parts of the world, early civilizations formed when people began coming together in urban settlements. ... From this specialization comes class structure and government, both aspects of a civilization. Another criterion for civilization is a surplus of food, which comes from having tools to aid in growing crops.
Federalism is the separation of state and national government's powers. One of the reasons that the Civil War occurred was over the debate of state vs. national powers.
Answer:
I believe it's the Treaty of Echota
