Answer:
There had once been land bridges separating the continents.
Step-by-step explanation:
This is the most accurate answer to this question. Alfred Lothar Wegener was a German researcher, geologist and meteorologist. Perhaps his greatest accomplishment in this subject was the fact that Wegener was the co-creator of the theory of continental drift. This story states that the continents started out as a large land mass, but over time, this became fragmented. To this day, the continents have been very slowly drifting around the Earth.