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.
Social Causes. There were many factors that contributed to the onset of the Civil War. Socially, the North and the South were built on different standards. The South, or the Slave States, was a slave-based community that followed a class-based system.ocial Causes. There were many factors that contributed to the onset of the Civil War. Socially, the North and the South were built on different standards. The South, or the Slave States, was a slave-based community that followed a class-based system.