By the second half of the nineteenth century, Kurds were found in large numbers in the uyezds of Zangezur, Javanshir and Jabrayil.[1] In 1886, they constituted 4.68% of the population of the Elisabethpol Governorate.[10] Small populations of Kurds were also found in the uyezds of Nakhchivan, Sharur-Daralagoz and Aresh.[11] Mass migration of Kurds from Persia and to a lesser degree from the Ottoman Empire[12] into mountainous regions of present-day Azerbaijan continued all throughout the nineteenth and early twentieth century, until 1920 when Azerbaijan became part of the Soviet Union.