I would say America has many different cultures mixed in. So many races live in America .
Answer: Sediment
Explanation: Sediment can consist of rocks and minerals, as well as the remains of plants and animals. It can be as small as a grain of sand or as large as a boulder. Sediment moves from one place to another through the process of erosion. Erosion is the removal and transportation of rock or soil.
It can cause earthquakes and volcanoes depending on the type of plate movement
