Answer:
They met other groups along their travels and learned about the area from them
Step-by-step explanation:
A Nomad is a member of a unit, group, or clan that has no home, moving about from place to place. Nomads are usually hunters or livestock owners because they do not stay in one place for too long.
Nomads usually make their travels to search for food, for them and their livestock by either hunting or farming (which is rare).
Their interaction with other cultures are at best brief because even though they meet other groups along their travels and learn about the area from them, they still move along after a short while.