Two reasons why cites grow on rivers

1. They can be formed bcause of events

2.  Cities can also grow on rivers to help grow the poupulation

Cities near water allow for water transportation, which is generally faster than land transportation. ... Sustainability: Rivers, lakes and the sea provide food and other resources, which help the population of coastal cities to grow and expand faster than landlocked settlements.

your answer is a hope this

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.