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 Civil War began because of an increasing push to place protective tariffs favoring Northern business interests and every Southern household paid the price. 6/30/2013: We were surprised by some of the reactions to our recent article on protective tariffs as one of the primary causes of the Civil War.