Civil War Bonds were financial instruments issued by the United States government during the American Civil War (1861-1865) to raise funds for military expenses. Citizens could purchase these bonds, effectively lending money to the government, which promised to pay back the principal amount with interest after a specified period. This helped finance the war effort and support soldiers. The sale of Civil War Bonds was promoted through various means, including public rallies and advertisements. Many Americans, including women and children, participated in buying these bonds as a patriotic duty, contributing to the Union's financial stability during a critical time in history.