Question

Which best explains how water sources, such as rivers, increased the interaction between prehistoric groups?

They protected groups from invasion.
They allowed for easy movement to other regions.
They kept groups separate most of the time.
They let groups divide and form unique cultures.

Answer 1

they invited interaction with other religions

Step-by-step explanation:

in general,when various civilization settle along particular river,this leads them to have interaction and even culture with one another.this is because water is a necessary resource of all people.