Answer:
Explanation: the reconstruction era?
i'll edit it just need to know if that's what your talking about
Navy, trade (second could be multiple things)
Flooding rivers helped contribute to the beginning of farming communities because of sediment deposits that would be spread beyond the banks of the river to the land near rivers. This sediment helped to create highly fertile land that could then be used for farming. The mineral rich sediment helped to develop early farming and allowed for the natural cycle of rivers to boost agricultural production.
