Why does the central United States from Texas to the Ohio Valley experience the greatest frequency of tornadoes on Earth?

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.

His main goal was  the modernization and westernization of turkey