hel!! what do you think is the reason that there are earthquakes in the 3 states missouri, illinois, and tennesse?

The reason this states have so many earthquakes is the fact of where they are located in the region of these states the earth surface has relatively thin crust and has high heat flow, both of which can favor relatively high deformation rates and active faulting. Unlike the opposite side of the states which has a colder much thicker crust which causes less fault formation and deformation of the crust.