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: Bleeding Kansas. Proposed by Sen. Stephen Douglas of Illinois, the Kansas-Nebraska Act essentially repealed the line imposed by the Missouri Compromise. Douglas, an ardent believer in grassroots democracy, felt that all the territories should be subject to popular sovereignty.
Causes Of Secession. Before the Civil War, the country was dividing between North and South. Issues included States Rights and disagreements over tariffs but the greatest divide was on the issue of slavery, which was legal in the South but had gradually been banned by states north of the Mason-Dixon line.