A 14th tiny, very dim, moon was discovered in 2013 and awaits official recognition. Triton, Neptune's largest moon, orbits the planet in the opposite direction compared with the rest of the moons, suggesting that it may have been captured by Neptune in the distant past.
History & Culture. The US Civil War lasted from 1861 to 1865 and led to over 618,000 casualties. Its causes can be traced back to tensions that formed early in the nation's history. Economic and social differences between the North and the South. With Eli Whitney's invention of the cotton gin in 1793, cotton became very profitable.
Strong cultural differences have a long history in the U.S. with the southern slave society in the antebellum period serving as a prime example. Not only social, but also economic tensions between the Northern and Southern states were so severe that they eventually caused the South to declare itself an independent nation, the Confederate States of America; thus initiating the American Civil War.