Beginning in the mid-19th century, the Great Powers took issue with the Empire's treatment of its Christian minorities and increasingly pressured extend equal rights to all its citizens. Following the violent suppression of Christians in the uprisings in Bosnia and Herzegovina, Bulgaria and Serbia in 1875, the Great Powers invoked the 1856 Treaty of Paris by claiming that it gave them the right to intervene and protect the Ottoman Empire's Christian minorities. By the late 1870s, the Greeks, along with several other Christian nations in the Balkans, frustrated with their conditions, had, with the help of the Powers, broken free of Ottoman rule. The Armenians, on the other hand, received less interest and no support that wasn't later withdrawn from the Great Powers and remained, by and large, stagnant during these years, earning them the title of 'millet-i sadika' or the "loyal millet".