How long did it take for the rockys mountains to form? Also what type of fault formed the mountain chain? ​

The Rocky Mountains formed 80 million to 55 million years ago during the Laramide orogeny, in which a number of plates began sliding underneath the North American plate.

thrust faults

Explanation:

answer; in the united states the plains include the great plains of the west and the tail grass prairie to the south of the great lakes extending east to the appalachian plateau

explanation: his kids were made by putting his penis into a vagina, he was born june 14th 1946. he is most likely not cheating on his current wife. but it is impossible to know.