Painting and sculpture were both important artistic mediums for the Sumerians. Sumerian artisans had to import some materials like stone and wood into their area, but trade was certainly important to the civilization as it grew.
One-party systems are often associated with dictators, whether they are "good" or "bad." Most dictatorships allow only one party, which totally controls the government.
It is B because Gorbachev was the leader of the Soviets
