What part of america is the united states?

 The United States of America is a federal republic consisting of 50 states, a federal district, five major territories, and various minor islands. The 48 contiguous states and Washington, D.C., are in North America between Canada and Mexico, while Alaska is in the far northwestern part of North America and Hawaii is an archipelago in the mid-Pacific. Territories of the United States are scattered

Explanation:

North America became a location where the West and East came together because of the Bering Bridge which is in Alaska North America. When the seas parted humans and animals migrated across the bridge. This led to these people developing their own social and cultural activities.