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.
Transcript: Top 5 Causes of the Civil War. The American Civil War cost of 620,000 American lives, which is roughly only 1% of the African lives lost to the slave trade. However, to say the Civil War was fought over slavery is an over simplified answer. Here are the top five causes of the civil war.