How many 20th century wars the US fought in?

Throughout the 20th century, the United States was involved in several significant wars, including World War I (1917-1918), World War II (1941-1945), the Korean War (1950-1953), the Vietnam War (1955-1975), and the Gulf War (1990-1991). Additionally, the U.S. participated in numerous military interventions and conflicts during this period, such as those in Grenada (1983) and Panama (1989). Overall, the U.S. fought in at least five major wars, along with numerous smaller conflicts and operations.