PLZ HELP!! No links plz! Or you will be reported.. Which best explains how rivers promoted the interaction between pre-historic groups?

A. They protected groups from invasion,

B. They allowed for easy movement to other regions,

C. they kept separate most of the time,

D. They let groups divide and form unique cultures.

It's most likely B

Explanation: Trade is an important part of these groups. So the language will also be spread between them during trade .

folds are formed when heat and pressure is applied to the rock. the higher the temperature, the more pliable rocks become. folds are more likely to occur when the deformation caused by the compression is applied slowly. faults are defined as the displacement of rock that were once connected along a fault line.

explanation: you are welcome mark brainliest i am trying to get tot he next level pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase i will freind request and if you mark me : )