Which statement best completes the timeline?
 Slavic people create
 early civilizations
 in Russia.
 The Mongol
 Empire conquers
 Russia
 Ivan the Terrible
 becomes the ruler
 of all of Russia.
 ?
 O
 A. Moscow becomes Russia's capital city.
 B. Catherine the Great expands Russian territory.
 C. Russia fights in World War II.
 D. Kievan Rus takes control over Russian lands.