Mongolia’s first conquer was Russia in 1235. Led by Batu Khan(grandson of Genghis), they ordered the Russian ruler Ryazan to surrender, and the Mongols sacked major cities. They annihilated Prince Yuri’s Army. After, they crushed the Russian steppe.
In 1239, Batu Khan came back to Russia. Most Russian princes fled because the saw the Mongols’ strength. The Mongols then sacked Kiev(modern day-Ukraine), while