Answer:
Explain the forces that push or pull the continents
Step-by-step explanation:
We recently learned this in science class and my teacher said that Wegener had proof, except he couldn't explain why the continents were moving. Now, we know of this as the theory of Plate Tectonics, but in Wegener's time, they thought the Earth was shrinking like a raisin.
Hope I helped, Have a nice day!
-Aadi x