The creators of the theory could not find a way to answer the question "What force was strong enough to move them?". Another reason why was that they proposed a movement speed of the continents that was incredibly high and impossible to reach.
Answer:
I think your missing the answer choices.
Explanation:
or do you not have any.
bc i picked Humans sometimes modify their environment to allow travel and the movement of goods.
C. Wind, it takes nothing to use wind which means it does not put out harmful emissions into the atmosphere.
Because the Mongolians invaded Russia I believe.