Muscovite is the name given to someone who comes from Moscow, now the capital of the Russian Federation. It is also the name given to the period of time in Russian history when the city of Moscow grew to be very powerful. During the 13th century AD Moscow was a small town, but it sits on the Moscow, Volga and Oka rivers, which were also excellent for trade. It was ruled by a series of princes, later called tsars, who were very ambitious and gradually took more and more land. The most famous of these is Ivan IV who was also known as Ivan The Terrible and ruled from 1533-84. He used violence to keep control and started many wars. His son Fedor was made head of the Christian Russian Orthodox Church in 1589. Even through much war and political trouble, the power of the Muscovites continued to spread and Moscow is still the political centre of Russia today.