How a floodplain forms and why do people live on flood plains?

Floodplains are either formed by erosion or by aggradation.

People might want to live here, because the sediments in the river make the soil rich, which is good for farming. There is also plenty of water around because of the rivers, and the rivers can be a form of transportation. The river can also be a food source.

Maybe a horizontal because its a pattern

Don’t use up to much of them it leads to pollution