A civil war is a conflict between groups within the same country, often fighting for control of the government or to achieve political change. These wars can arise from deep-seated issues such as ethnic tensions, economic disparities, or ideological differences. The fighting can lead to significant loss of life and destruction, impacting the nation's stability and development. One of the most notable examples of a civil war is the American Civil War, which took place from 1861 to 1865. This war was primarily fought over issues like slavery and states' rights, ultimately leading to the preservation of the Union and the abolition of slavery in the United States.