Answer: C. Separatists in Chechnya tried to break away from Russia rule
Explanation: After the end of the Cold War and the collapse of the Soviet Union, several independent states of the former Soviet republics and the Russian Federation emerged. During the collapse of the USSR, Chechnya declared independence, that a few years later the Russian military forces would enter Chechnya in order to restore the constitutional order. These operations by the Russian government were repeated several times over the coming years. By about 2009, the Russian forces seriously disabled the Chechen separatists, the army was withdrawn from the Chechen region, and sporadic attacks and confrontations were taking place between separatists and local police at a lower level.
