The Mongol Empire expanded westward under the command of Batu Khan to subdue the western steppes and drive into Europe.
Their western conquests included Volga Bulgaria, almost all of Alania, Cumania, and Rus', along with a brief occupation of Hungary.
They also invaded Poland, Croatia, Serbia, Bulgaria, the Latin Empire, and Austria.
During the siege of Kolomna, the Khagan's half brother Khulgen was killed by an arrow.

After the conquest, Ögedei's son Güyük and Chagatai's grandson Büri ridiculed Batu, and the Mongol camp suffered dissension.
The Khagan harshly criticized Güyük: "You broke the spirit of every man in your army...Do you think that the Russians surrendered because of how mean you were to your own men?".
He then sent Güyük back to continue the conquest of Europe.
Güyük and another of Ögedei's sons, Kadan, attacked Transylvania and Poland, respectively.

Ögedei Khan had granted permission to invade the remainder of Europe, all the way to the "Great Sea", the Atlantic Ocean; his death prevented the invasions from continuing west, as Batu withdrew to participate in the election of a successor.
The Mongol Empire expanded westward under the command of Batu Khan to subdue the western steppes and drive into Europe. Their western conquests included Volga Bulgaria, almost all of Alania, Cumania, and Rus', along with a brief occupation of Hungary. They also invaded Poland, Croatia, Serbia, Bulgaria, the Latin Empire, and Austria. During the siege of Kolomna, the Khagan's half brother Khulgen was killed by an arrow.
After the conquest, Ögedei's son Güyük and Chagatai's grandson Büri ridiculed Batu, and the Mongol camp suffered dissension. The Khagan harshly criticized Güyük: "You broke the spirit of every man in your army...Do you think that the Russians surrendered because of how mean you were to your own men?". He then sent Güyük back to continue the conquest of Europe. Güyük and another of Ögedei's sons, Kadan, attacked Transylvania and Poland, respectively.
Ögedei Khan had granted permission to invade the remainder of Europe, all the way to the "Great Sea", the Atlantic Ocean; his death prevented the invasions from continuing west, as Batu withdrew to participate in the election of a successor.
Ögedei Khan