The Appalachian Mountains began to form about 450 million years ago, when the land that is currently North America and that of northwest Africa converged, creating, in part, a major landmass called Pangea, and forcing the North American plate beneath that of Africa and forming mountains.
(The Appalachian Mountains; began; to form about 450 million years ago, when the land that is currently North America and that of northwest Africa converged, creating, in part, a major landmass called Pangea, and forcing the North American plate beneath that of Africa and forming mountains) Context(The Appalachian Mountains began,List([0, 31))):(The Appalachian Mountains; began to form; T:about 450 million years ago) (a major landmass; called; Pangea) (Africa; converged; ) (the land that is currently North America and that of northwest Africa converged; creating; a major landmass called Pangea, and forcing the North American plate beneath that of Africa and forming mountains)
The Appalachian Mountains began,List([0, 31))
The Appalachian Mountains The Appalachian Mountains a major landmass Africa the land that is currently North America and that of northwest Africa converged
began began to form called converged creating
to form about 450 million years ago, when the land that is currently North America and that of northwest Africa converged, creating, in part, a major landmass called Pangea, and forcing the North American plate beneath that of Africa and forming mountains
T:about 450 million years ago
Pangea
a major landmass called Pangea, and forcing the North American plate beneath that of Africa and forming mountains