- On August 12, 1898, the Hawaiian Islands were annexed by the United States and became a U.S. territory.
- The Hawaiian Organic Act of 1900 established a territorial government for Hawaii, with a governor and a legislature appointed by the President of the United States.
- The Hawaiian Organic Act also granted U.S. citizenship to all native-born Hawaiians.
- In 1940, the Hawaiian Organic Act was amended to allow Hawaiians to elect their own governor and legislature.
- On August 21, 1959, Hawaii became the 50th state of the United States.