WILL GIVE BRAINLIEST TO HOWEVER ANSWER IN LESS THEN 10 MINS Which best explains how rivers affected the interaction between prehistoric groups?

They protected groups from invasion.
They invited interaction with other regions.
They kept groups separate most of the time.
They let groups divide and form unique cultures.

How is this passage an example of an internal conflict? o o aught now! the first quite hat. a ckle unds djust track. 1 e sour it describes the narrator's inability to stop playing when she wants to do so. it describes the narrator's unexpected enjoyment of performing in front of an audience. it describes the narrator's thoughts and feelings as she struggles through a poor performance. it describes the results of the narrator's refusal to practice diligently and learn to play the piano correctly. o o