Task: Text Categorization
Input (English): Nogai, a general and effective leader of this polity, sent 4,000 troops to Michael VIII Palaiologos to help fight the despot of Thessaly. This polity's founder sent very threatening messages to Bela IV before invading and winning at the Battle of Mohi, followed by slaughtering a quarter of Hungary's population. It reached its height under Uzbek. A later leader of this polity and Vytautas the Great of Lithuania lost the Battle of Vorskla River after trying to regain his throne. Its leader Berke fought against the man who sacked Baghdad, Hulagu, but more famously, its leader Tokhtamysh lost to Tamerlane its capital of Sarai, a place where tribute was paid by people like Alexander Nevsky. For 10 points, name this polity founded by Batu Khan, which was composed of the Blue and White Hordes and supposedly named for a certain colored tent.
Output (English): History