Using complete sentences Describe the two types of changes National boundaries experience on a regular basis and provide an example of each

The two types of changes that national boundaries experience on a regular basis are small changes and drastic changes. A small change may be something as simple as a river shifting direction and moving 50 feet. This would be an example of a small change in a state's boundary.

Explanation:

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answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;