[1] The United States had established trade relations with the Sultanate in the early years of American independence.

The first Treaty of Amity and Commerce[2] was concluded at Muscat on September 21, 1833, by Edmund Roberts and Said bin Sultan.

A Peace Corps program, which assisted Oman mainly in the fields of health and education, was initiated in 1973 and phased out in 1983.

In March 2005, the U.S. and Oman launched negotiations on a Free Trade Agreement that were successfully concluded in October 2005.

[3] Following the termination of the British Persian Gulf Residency and withdrawal of British troops in 1971, the U.S. and Oman have maintained a strong defense partnership with the latter earning accolades for its leadership role in the mediation of the Yemeni Civil War and the negotiations that formed the 2015 Joint Comprehensive Plan of Action (JCPOA) and its overall promotion of stability in the region.