The Treaty of reciprocity between the United States of America and the Hawaiian Kingdom was a free trade agreement signed and ratified in 1875.
The treaty gave free access to the US market to sugar and other products grown in Hawaii starting in September 1876. In return, the US gained lands at Pu‘u Loa for the Pearl Harbor naval base. The treaty led to large investment by Americans in Hawaiian sugar plantations. (see also Early History of Pearl Harbor)
The first shipment of sugar from Hawaii to the United States under the treaty arrived in San Francisco in September 1876 in a ship commanded by Captain William H. Marston.
The reciprocity treaty was a treaty that let Hawaii and America trade with each other and the items they traded with were duty-free. The treaty was signed on January 30, 1875.