Which of the following groups conquered north africa at one time or the other? select all that apply.

mongols
sumerians
romans
phoenicians
muslim arabs
crusaders

Technology has affected regional settlement patterns in what ways? choose all that apply. climatic improvement strategies have improved crop productivity. mechanized agricultural methods have improved agricultural productivity. participation in the global economy has increased urbanization. population shifts from urban to rural areas has increased as a result of petroleum production. settlement areas have increased as a result of improved water storage and delivery systems.