What are the answer choices?
Answer:
External and Internal forces.
Explanation:
The earth's relief forms such as Mountains, Rivers, Plateaus etc, are changed because of the action of internal and external forces for example; wind, water or human activities.
Those geographic helped to protect the Roman Empire.
Answer:
Part of this border follows a natural boundary.
Explanation:
The answer is this one because Its a natural line between texas and Mexico and there are no mountains
your answer is
A) the sunlight from the sun is concentrated in the smallest area of earth
