 Complete the following phrase:  The area prospered under the rule of Hetman Ivan Mazepa 16871708, increasing in size and population with upwards of 20,000 residents. Baturyn boasted 40 churches and chapels, two monasteries and a college for government officials and diplomats the Kantseliarsky Kurin. In 1708 the Zaporozhian Cossacks became involved in the Great Northern War. Hetman Mazepa, after realizing that the Russians planned to remove him from power, switched his allegiance to Sweden then at war with the Russian Empire and began to place more emphasis on Ukraines independence. On 13 November 1708 a Russian army under the command of Alexander Menshikov 