Answer:
Alfred Wegener was a German meteorologist who proposed the theory of Continental Drift in the early 20th century. He argued that the continents were once joined together in a single landmass called Pangaea, but over time they had drifted apart and moved to their present locations. Wegener's theory was based on a variety of evidence, including the similarity of the rock formations and fossil records on different continents, and the fact that the coastlines of certain continents appeared to fit together like puzzle pieces.
However, Wegener's theory encountered significant resistance from the scientific community at the time. One of the main problems with it was that Wegener was unable to provide a satisfactory explanation for the forces that would have caused the continents to drift. Without a clear understanding of the driving forces behind Continental Drift, many scientists were skeptical of Wegener's theory and it was not widely accepted until the 1950s, when the theory of plate tectonics provided a more complete explanation for how the continents move.