[immadashell]

Pangea, also spelled Pangaea, in early geologic time, a supercontinent that incorporated almost all the landmasses on Earth.

Plate Tectonics Theory was developed in the 1960s.

[Clutch Martin]

“Plate Tectonics Theory was developed in the 1960s.”

And confirmed by an Apollo 11 experiment left on the surface of the Moon which measured continental drift with lasers.

From what I’ve read in recent Earth Science textbooks and physical Geology textbooks is that the continents drift apart about the rate that a human fingernail grows (as an example).