Tartar
Tartars is an umbrella term for different Turkic ethnic groups bearing the name “Tatar” that have spread across many parts of Russia. The original Tartars are the Kazanian Tartars. The Republic of Tatarstan is a Russian republic located in Eastern Europe—its capital city being Kazan. Crimean Tartars and Siberian Tartars speak slightly different versions of the Tartar language.
Initially, the ethnonym Tartar possibly referred to the Tartar confederation. This confederation was eventually incorporated into the Mongol Empire when Genghis Khan unified the various steppe tribes.
The etymology of Tartar. The word derives from Turkish and Farsi where tätar means “mounted messenger”.