All of the evidence suggests that 225 million years ago all of the land masses of earth were locked together as a great super continent called Pangaea.
The Pangaea theory was treated with much skepticism when it was first raised. But since then, there have been much evidence to support this theory created by Alfred Wegener. The evidence used to prove this theory includes continental coastlines fitting together like puzzle pieces, matching fossils on different continents, and identical rocks in different continents as well.
Due to continental drift, the super continent broke up into 7 continents. The break up of the continent went through 5 stages. It went from Permian (225 million years ago), to Triassic (200 million years ago), then Jurassic (135 million years ago), Cretaceous (65 million years ago), to present day.