On April 17, 1900, chiefs on the island of Tutuila signed the Treaty of Cession of Tutuila, transferring control of American Samoa to the United States.

Many years later, according to legend, Nafanua, a Samoan warrior goddess, was called upon during a battle between the Tongans and Samoans. When the Tongans realized it was a woman, they ended the war. Nafanua created the Samoan government, headquartered in Savaii. Many credit Nafanua and her descendant Queen Salamasina for creating the islands’ faamatai (local government) and the fa’asamoa (local customs). Nafanua also told the Samoans that sometime in the future, a new government from across the seas would come and that they should support it.

During the early 1830s, John Williams of the Congregationalist London Missionary Society became the first missionary to reach the Samoan Islands. Samoans likely saw his arrival as the fulfillment of Nafanua’s prophecy and adopted Christianity. Williams’ arrival was soon followed by many other missionaries and traders, making Pago Pago one of the largest whaling ports in the entire Pacific Ocean. Destined for China, many of the traders who passed through the islands were so fond of the scenery and climate that they settled there, bringing with them many diseases to which the native Samoans had no immunities.

The Samoans’ first contact with Americans occurred in 1872 when US Navy Commander Richard Meade met with Tutuil’a Island’s Chief Manuma to establish a port in Pago Pago. Around this same time, traders from the United Kingdom and Germany also established trade posts on the islands. The Samoans, British, Germans, and Americans lived peacefully until 1889, when three German ships invaded a Samoan village, damaging American property. In response, three American ships entered the harbor, preparing to fire. However, before either side could shoot, a typhoon wrecked all six ships and an armistice was called.

Tensions continued between the nations, resulting in the 1899 Samoa Tripartite Convention. With representatives from each nation, the joint commission met to divide the islands. Germany received the western islands of Upolu, Savaii, Apolima, and Manono, while the US got control of Tutuila, Rose Island, and Aunu’u. Britain gave up its claims in exchange for Germany giving them their protectorates in the Northern Solomon Islands. On April 17, 1900, the local chiefs gave up their claims to the islands through the Treaty of Cession of Tutuila. The US officially took control of the eastern islands on June 7, 1900. The US Navy then expanded the Pago Pago Bay coaling station into a full naval station for the Pacific Squadron. The islands’ first presidents were US Navy officers operating the islands like a military base.

Under American control, Samoan customs remained prevalent. The chiefs were allowed to continue managing political affairs in their traditional form, through the faamatai. It was around this time that these islands began being referred to as American Samoa.

Up until 1951, the US Navy ran American Samoa. It was at this time that President Harry Truman officially turned over the responsibility of administering American Samoa to the Department of the Interior, drafting a new constitution in 1960. American Samoa officially became self-governing on July 1, 1967. In 1978, American Samoa was no longer led by a Navy-appointed governor, holding their first election. As a US territory, Samoa elects one non-voting delegate to the US House of Representatives and sends delegates to the Democratic and Republican National Conventions. People born in American Samoa are considered US nationals and cannot be a US citizen unless one of their parents is.