The Russian extension in this century developed with the main theme of supporting independence of Ottomans' former provinces and then bringing all of the Slav peoples of the Balkans under Bulgaria or using Armenians in the east sets the stage. At the end of the century, from Russian perspective, Romania, Serbia and Montenegro and autonomy of Bulgaria was achieved. That alarmed the Great Powers. After the Congress of Berlin the Russian expansion was controlled through stopping the expansion of Bulgaria. The Russian public felt that at the end of Congress of Berlin thousands of Russian soldiers had died for nothing.