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
Causes of the Civil War: Abolitionism. The issue of slavery was further heightened by the rise of the Abolitionist movement in the 1820s and 1830s. Beginning in the North, adherents believed that slavery was morally wrong rather than simply a social evil.
Political and Economic Causes of the American Civil War. 1  White House, residence and office of the President of USA. 2  On the one hand, political and economic reasons were mutually exclusive; on the other hand, these were overlapping.