The Unification of Hawai ' i ( 1782–1810 ) was a series of wars in the Hawai'ian Islands fought Hostile_encounter over control of the entire island chain .

The Island of Hawai ' i was divided into several districts , Moloka ' i , Lana ' i , and Kaho'olawe were united Cause_to_amalgamate under Maui , O'ahu was independent , and Kauai ruled Ni'ihau .

With Hawai ' i united Cause_to_amalgamate under his rule , Kamehameha eventually invaded Attack Maui and Oahu , culminating in the climatic battle that was the Battle of Nu'uanu .