Hawaiian History By mailawson 500 BCE Polynesians arrive in Hawai‘i. Apr 14, 1778 Captain Cook, British explorer, lands on the island of Kaua‘i. Apr 14, 1810 Kamehameha I unifies the kingdom. Apr 14, 1820 First American missionaries land. Apr 14, 1840 The first Constitutional government was formed in Hawaii. Apr 14, 1887 King Kalākaua forced to sign the Bayonet Constitution. Apr 14, 1891 Lili'uokalani became queen Apr 14, 1893 Queen Lili'uokalani forced out of throne. Apr 14, 1900 Hawaii became a territory of the United States Apr 14, 1917 Queen Lili‘uokalani dies. She did so much for the Hawaiian culture and Hawaii itself, and impacted so many people, that she is still prized till this day. Apr 14, 1941 Pearl Harbor attacked by Japan. Otherwise known as "Pearl Harbor Bombing" Apr 14, 1959 Hawai‘i becomes the 50th state of the United States