Russia's valiant minority, the Kosak.

 Kazak is also known as Kosak. The Russian word "Kasak, Kazak" was changed to "Kazak," which originated from the word that means "free man" in Turkish. In addition, the Russian word for Kazak as a group is Kazacestbo. They elected their heads by election and carried out democratic autonomy to settle all important issues by consensus, jointly fighting the feudal emperors of Russia, Poland, Lithuania, and neighboring Turkic nomadic tribes to expand their land was expanded. Threatened by the 16th and 17th centuries of Tatar and Turkic invasion, Russia, Poland, and Lithuania gave Kazak weapons, ammunition, food, and funds to defend their borders. Along with the strengthening of the Russian government, the government tried to reduce Kazak's autonomy by conferring various privileges to the upper part of Kazak, but the peasant war led by S. Rajin in the late 17th century and Fugachev in the late 18th century was against it. In the 18th century, influential heads of state obtained the government's government's government posts and became landlords, and Kazak was reorganized into a fighting group as a non-regular Russian army under the terms of exchange for vast land. In the early 20th century, 11 Kazak legions belonged to each local military district across the country. In 1912, the total population of Kazak was about 4 million, of which about 450,000 were military personnel, mainly the 150th regiment of cavalry. After the October Revolution, most Kazak remained neutral in the domestic war, but the poorest supported the new Soviet regime, while the rich and poor turned to the White Army. With the establishment of the Soviet system, the Kazak group as a privileged class was disbanded, and the rich peasant eradication movement and agricultural collectivization proceeded. In 1936, restrictions on Kazak's participation in enemy forces were abolished, and the newly organized Kazak Division gained a reputation in the war between Germany and Russia. But I think I heard that the Kosak people harmed Hamgyeong-do at the end of the Joseon Dynasty.