This man created a guard for that portion which terrorized the country, the oprichniki.
After threatening to abdicate, this ruler divided his territory into the zemshchina and a portion administered directly by him. This man created a guard for that portion which terrorized the country, the oprichniki. This man also called the first of his country's assemblies of the land, or zemsky sobors. This ruler accidentally killed his heir in a fit of rage. This man was the first to be given the title of tsar. For 10 points, name this ruler of Russia most famous for his torture and killing of many boyars.
After threatening to abdicate, this ruler divided his territory into the zemshchina and a portion administered directly by him.
{Ivan IV} of Russia [or {Ivan} the {Terrible}; or {Ivan Grozny}; or {Ivan} the {Awesome} and