How did the spread of the civilization begin in americas?

The spread of the civilization begin in the Americas with people migrating from Asia during the Ice Age through the Bering Strait, which at the time was not covered by the Ocean.

1. explain aspects of the democratic process as it was developed in ancient athens

2. trace the roots of the americans political process to ancient athens

3. explain the relationship of citizens to the political process

d.)   when the us left nato after the end of the cold war and they had to evolve to focus on more humanitarian measures with the smaller budget