Homonym: Greenbacks (Money)
"Greenbacks" refer to paper currency issued by the United States during the Civil War, specifically starting in 1861. The name comes from the green ink used on the back of the notes. These currencies were initially created to help finance the war effort and were not backed by gold or silver, leading to fluctuations in their value.
Over time, the term "greenbacks" has come to represent all forms of U.S. paper money. The introduction of the Federal Reserve in 1913 helped stabilize the currency system, and today, greenbacks are an essential part of the U.S. economy, used for everyday transactions.