Using four or more complete sentences, explain why new technologies are making physical features less of a challenge when creating and changing national boundaries.

tethys sea was an ocean during the mesozoic era .

this ocean was found between gondwana and laurasia.

the name of the ocean came from tethys the titan goddess of the primal font of fresh water which nourishes the earth.

the ocean was also know as neotethys.

b

because the standard of living varies from region to region