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 Civil War, also known as âThe War Between the States,â was fought between the United States of America and the Confederate States of America, a collection of eleven southern states that left the Union in 1860 and 1861 and formed their own country in order to protect the institution of slavery.