80 million BC: Atlantis breaks off the East coast of North Newfoundland.
75 Million BC: California breaks off the west coast of North Newfoundland. Magnusinsula splits off the west coast of South Newfoundland.
65 million BC: The dinosaurs are wiped out by a comet.
55 Million BC: Terrafrica splits off the east coast of South Newfoundland.
6 Million BC: The ancestors of humanity diverge from those of chimps.
2 Million BC: The first members of the genus Homo evolved.
200 thousand BC: The first modern day human is born.
10 thousand BC: The Ice Age ends.
Up to this point, the history of the old world was identical OTL.
1442: Atlantis is discovered.
1447: France builds a colony in Atlantis. (Nouvelleparis).
1449: Spain builds a colony in Atlantis. (Nuevoespaña).
1454: England builds a colony in Virginia. Scotland builds a colony in the far north of Atlantis, naming it Nova Scotia.
1455: The Natives of Atlantis are encountered. They are very violent, and destroy most of the colonies.