Alfred wegener couldn't explain how the lithospheric plates moved to support his continental drift theory, but he did present evidence for it, including

Hello,
 Alfred Wegener found evidence these are some examples:
# The Appalachian Mountains start in North America and it is conected along the European coastline. This tells us that once the continets were connected.
#Some fossils are found near the same boarder lines
#The continents fit together like a puzzle 

Hope it helps