Yemelyan Pugachev
Yemelyan Ivanovich Pugachev () (c. 1742 – ) was a Russian Cossack who led a great popular insurrection during the reign of Catherine the Great, claiming to be her late husband, Emperor Peter III. Alexander Pushkin wrote a notable history of the rebellion, "The History of Pugachev", and he recounted some of the events in his novel "The Captain's Daughter" (1836).
Pugachev's Rebellion
The heterogeneous population in Russia created special problems for the government, and it provided opportunities for those opposing the state and seeking support among the discontented, as yet unassimilated natives. Each group of people had problems with the state, which Pugachev focused on in order to gain their support.