Explanation: With Russia’s conquest by the Mongols, its focus shifted from Western Europe toward the East and Central Asia. Russia was primarily a tributary state (B); it kept its nomadic ways and did not develop trade. The predominant religion in Russia was Orthodox Christianity (C), spread by the Byzantines. When the Mongols converted to Islam, it helped motivate Russia to break free. Russia remained a series of small, disunited principalities (D).