 Complete the following phrase:  The first time Russian authority was established over the peoples of the Caucasus was after the Russian annexation of the Kingdom of Kartli-Kakheti eastern Georgia in 1801. General was the first person to be assigned to govern the Caucasus territory, being officially titled as the Commander-in-Chief in Georgia and Governor-General of Tiflis Tbilisi. Under of his successors, notably Prince Pavel Tsitsianov, General Aleksey Yermolov, Count Ivan Paskevich, and Prince Mikhail Vorontsov, Russian Transcaucasia expanded to encompass territories acquired in a series of wars with the Ottoman Empire, the Persian Empire, and 