<Tr> <Th_colspan="2"> North American Plate </Th> </Tr> <Tr> <Th> Type </Th> <Td> Major </Td> </Tr> <Tr> <Th> Approximate area </Th> <Td> 75,900,000 km (29,300,000 sq mi) </Td> </Tr> <Tr> <Th> Movement </Th> <Td> west </Td> </Tr>

Where are the leading and trailing edges of the north american tectonic plate