The untied states that we know today was heavily influenced by one significant characteristics is the number of

the number of from southern states who moved to cities in the northern states?

A. the Great Migration; African Americans :)  I hope you have a great day:)

Explanation:

sediment layers stop spreading when they reach a barrier or they run out of sedimentary material. lateral spreading is the movement of gently to steeply sloping, saturated soil deposits caused by earthquake-induced liquefaction. i hope this . : )

river is shown in this type of map