The way that rivers contributed to civilization was that Barges provided a way to carry goods to market, creating a motive to increase production.
This is used to refer to the way that people began to have to build cities and live in communal lifestyles and develop a societal kind of living. During this period people were able to build these areas because pof the existence of rivers around them.
The rivers were a source of food. They were used as ports that helped to encourage trades as well.
Hence we can conclude that The way that rivers contributed to civilization was that Barges provided a way to carry goods to market, creating a motive to increase production.
Read more on civilization here:
https://brainly.com/question/870459
#SPJ1