 Complete the following phrase:  In the ensuing period, in post-Iranian Russian-held East Caucasia, an Azerbaijani national identity emerged at the end of the 19th century. After more than 80 years of being part of the Russian Empire in the Caucasus, the Azerbaijan Democratic Republic was established in 1918. The name Azerbaijan, adopted by the ruling Musavat Party for political reasons,ref nameSochineniya, vol II1ref had been used to identify the adjacent region of northwestern Iran. Azerbaijan 