From the 1220s into the 1240s, the Mongols conquered the Turkic states of Volga Bulgaria, Cumania, Alania, and the Kievan Rus' federation. Following this, they began their invasion into heartland Europe by launching a two-pronged invasion of then-fragmented Poland, culminating in the Battle of Legnica (9 April 1241), and the Kingdom of Hungary, culminating in the Battle of Mohi (11 April 1241). Invasions also were launched into the Caucasus against the Kingdom of Georgia and the Chechens and Ingush, as well as into the Southeast Europe against Bulgaria, Croatia, and the Latin Empire. The operations were planned by General Subutai (1175–1248) and commanded by Batu Khan (c. 1207–1255) and Kadan (d. c. 1261). Both of the latter were grandsons of Genghis Khan. Their conquests integrated much o