The Narodnik movement agitated against a ruler with this name who oversaw the Circassian genocide. Another ruler with this name allied with Napoleon in the first Treaty of (-5[1])Tilsit after a defeat at the (10[2])Battle of Friedland. After that ruler (10[1])with this name died, a group of liberal revolutionaries fought for the accession of his brother Konstantin, sparking the Decembrist revolt. (10[1])Under a ruler with this name, local assemblies known as zemstvo were created. (10[1]-5[1])A reformist tsar (-5[1])with this name ruled Russia from 1855 until his 1881 assassination. (10[1])For 10 points, what first name was shared by three 19th-century tsars of Russia, including one who emancipated the serfs in 1861? (10[1])■END■ (10[1])