First to answer gets brainliest. answer asap : ) what was ivan iv (the terrible) known for? a: expanding the russian empire, building magnificent colored domes, and ruling through cruelty b: building the russian army, introducing a new religion, and restoring the kremlin at great cost to his people c: creating a new code of law for russia, building many churches, but allowing serfs to starve because of high taxes d: building a new capital at kiev, defeating the mongols with enormous violence, and converting to christianity