These large pieces of rocks are called tectonic plates. Tectonic plates never stop moving, this process is called continental drift. Tectonic plates move because of convection currents. These convection currents happen in the mantle, underneath the tectonic plates. The heat, which causes the convection currents, is produced from the radioactive decay left over from the Earths formation. The reason why convection currents are relevant to the moving of tectonic plates is because the heat builds up pressure underneath the crust (tectonic plates).
Warsaw is a city located in Benton County, Missouri. The population was 2,127 at the 2010 census. It is the county seat of Benton County.
As of the 2010 census O'Fallon had a population of 79,329, making it the largest municipality in St. Charles County and seventh largest in the state of Missouri. In 2006 Money Magazine named O'Fallon 39th in its Best 100 Places to Live. Money Magazine also ranked O'Fallon 68th out of 100 in 2008 and 26th out of 100 in 2010. O'Fallon's namesake in St. Clair County, Illinois is also part of the St. Louis Metropolitan Statistical Area. The two O'Fallons are one of the few pairs of same-named municipalities to be part of the same MSA.