Complex sentence: In 1917 Russia crumbled into revolution led by Vladimir Lenin and the Bolshevik Party, who touted Marxist theory as the savior, and promised a broken country "peace, bread and land" by collectivizing the means of production.
Split into simpler sentences: In 1917 Russia crumbled into revolution led by Vladimir Lenin's Bolshevik Party. They carried Marxist theory as their savior, and promised a broken country "peace, bread and land" by collectivizing the means of production.