uh i need a picture of the map
Answer:
Heating and Pressure
Explanation:
Sandstone forms from beds of sand laid down under the sea or in low-lying areas on the continents. As a bed of sand subsides into the earth's crust, usually pressed down by over-lying sediments, it is heated and compressed.
None of the Plains tribes were originally Plains tribes - they all migrated into the Great Plains when horses became available. Living on the vast, empty grasslands was almost impossible without horses, which made following the herds a practicable lifestyle.
Previously most of the Plains tribes had lived in the northern woodlands or east of the Missouri river
