Explain the cause and effect of earthquake

Earthquakes are caused by sudden tectonic movements in the Earth's crust. The main cause is that when tectonic plates, one rides over the other, causing orogeny collide (mountain building), earthquakes. The stress increases when they stick, relative motion between the plates. The effects from earthquakes include ground shaking, surface faulting, ground failure, and less commonly, tsunamis

Explanation:

cherokee and arikara

they both built pyramids.