riddle - separate with a riddle, as grain from chaff screen sift, sieve, strain - separate by passing through a sieve or other straining device to separate out coarser elements; sift the flour
Causing the Civil War. Historically, textbooks have taught that incompatibility between northern and southern economies caused the Civil War. The industrial revolution in the North, during the first few decades of the 19th century, brought about a machine age economy that relied on wage laborers, not slaves.
The event that caused the death of 14,000,000 Russians was the Russian Civil War. Explain the causes of Russia's Civil War and its outcome. The causes of Russia's Civil War were the failure of provisional government of Kerensky, the growing power of the soviets, the treaty of Brest-Litovsk angered Russians, and the Bolsheviks wanted to wipe out all their enemies. The outcome was the Bolshevik victory over the Whites and 14,000,000 dead.