The Sun's increase in activity.
Answer:
A
Explanation:
Subsequent boundaries are boundaries that were there before a place was established.
Example: Berlin and the wall of Berlin.
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The concept of Peak Oil was first developed in the 1950's by the geologist M. King Hubert.
Answer:
federal government developed over time?
The federal government's power has INCREASED over time, particularly through the New Deal Programs during the Great Depression.
Explanation: