Princeton's WordNet(5.00 / 1 vote)Rate this definition: 1  fauna, zoology(noun) all the animal life in a particular region or period. the fauna of China; the zoology of the Pliocene epoch. 2  zoology, zoological science(noun) the branch of biology that studies animals.
The American Civil War, widely known in the United States as simply the Civil War as well as other sectional names, was a civil war fought from 1861 to 1865 to determine the survival of the Union or independence for the Confederacy.
The American Civil War was a war fought within the United States of America between the North (Union) and the South (Confederacy) starting from 1861 and ending in 1865.This war was one of the most destructive events in American history, costing more than 600,000 lives.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.