During the 18th and 19th centuries, Russian military and ecclesiastical authorities dominated city life; the Russian Orthodox Church had involvement in a significant part of Kyiv's infrastructure and commercial activity. In the late 1840s the historian, Mykola Kostomarov ''()'', founded a secret political society, the Brotherhood of Saint Cyril and Methodius, whose members put forward the idea of a federation of free Slavic peoples with Ukrainians as a distinct and separate group rather than a subordinate part of the Russian nation; the Russian authorities quickly suppressed the society.