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: Slavery and Control of the Government. Throughout the first half of the 19th century, Southern politicians sought to defend slavery by retaining control of the federal government.
1 Secession and the American Civil War. 2  How the Compromise of 1850 Helped Delay the Civil War. 3  5 Things That Caused the U.S. Civil War. 4  Top 5 Causes of the Great Depression. 5  The Top 5 Causes That Led to World War I.