دولت خوارزمشاهیان را پایان داده.

All about (Sultan Osman) The first Ottoman ruler

The existing narrations agree on this issue that Suleiman Shah, the ancestor of Sultan Osman, the Sultan of Mahan region (It was from the areas near the city of Balkh in the northeast of Fars) When Genghis came to these areas for war, he captured and destroyed those areas and ended the Khwarezm Shah government.…