The mississippi river is a physical feature as it was discovered during a time where man weren`t capable of such construction in the earth.
B. Deep currents are driven by density differences, while surface currents are driven by wind and Earth's rotation.
geophysical phenomena is earth and its environment in space for example its when earthquakes, Tsunami, Volcanic activity, cyclone stuff sorta like that
hope that helps
The answer is D. The question asks how different cultures influenced each other so that rules out options A & B. Option C is about the environment being destroyed, and that really has nothing to do with foreign influence.
