The national debt is composed of distinct types of debt, similar to an individual whose debt may consist of a mortgage, car loan, and credit cards. The different types of debt include non-marketable or marketable securities and whether it is debt held by the public or debt held by the government itself (known as intragovernmental). The U.S. has carried debt since its inception. Debts incurred during the American Revolutionary War amounted to $75 million, primarily borrowed from domestic investors and the French Government for war materials. More at the US Department of the Treasury ➜