Arturo recently read about watersheds and the direction rivers flowed in the United States. Arturo studied his map of the country and identified rivers and their flow direction. Look at the picture and identify what the black line drawn on the map represents.

dont know

explanation:

these civilizations were located around fertile rivers, where they could produce an abundance of crops

in which two ways were the northeast woodland indians and the southeast indians similar? both collaborated to form the iroquois confederacy. both cultivated the crops of corn, beans, and squash. both lived in rich environments of swamps and rivers. both lived in tree-bark dwellings called wigwams. both expected men to hunt, while women farmed.