These characteristics describe pastoral nomads.
1 .commercial farmers
2 .herders
3 .move from place to place
4 .urban dwellers
(select all that apply)

Pastoral nomads are known to depend on domesticated livestock, thus being called herders.  They also migrate in an established place to find lands to be used for pastor, concluding that they move from place to place.

So the answer is number 2, herders, and 3, move from place to place.

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