True, all polygons are closed
Northeast (N) region:
- Massachusetts
- Connecticut
South (S) region:
- Arkansas
- West Virginia
Midwest (M) region:
- North Dakota
- Missouri
West (W) region:
- New Mexico
- Oregon
The United States are divided into few large regions. Even though they may not always correspond with the actual geographic position of the state and its regional location as in south, northeast, west, or Midwest, the states are carefully put into the regional divisions, and it is mostly done by natural characteristics of the places, as well as climate.
Answer:
The boundaries where the tectonic plates meet are the areas of the world with the most violent natural earthquake activity. When the plates grind against each other along plate boundaries, the rocks are under so much pressure that sometimes they heat up and fold, creating mountain ranges, hills and valleys.
