Northern cities (in general) had not welcomed the huge Influx of African Americans.
Answer:
Delta
Explanation:
Delta is a triangular region where rivers divide into small streams and then progresses to drain into a big river. Such regions possess rich alluvial and mineral soil deposits. It is the part of an old age river.
For example - the largest delta of the world is the Ganges Bhramaputra delta
Cahokia was one of the largest and possibly the capital city of the people that are referred to as the Mound Builders. Cahokia's size and the large number of people that lived there led to the main issues. Bad droughts and poor harvests meant people couldn't eat.
