Final answer:
Supporting details include the Great Māhele initiating private land ownership and loss of ancestral lands for many native Hawaiians, and the annexation of Hawaii by the U.S., which led to Congress returning land to the state for the benefit of Native Hawaiians.
Step-by-step explanation:
The passage suggests that the main idea is the split ownership of lava lands in Hawaii, shared by the state and existing property holders.
A supporting detail for this main idea could be the information pertaining to the Great Māhele, which introduced private land ownership in Hawai'i and resulted in many native Hawaiians, or makaʻāinana, losing their ancestral lands. This event marked a significant transition from traditional communal land systems to individual land ownership, drastically affecting the control and distribution of land.
Another supporting detail is the annexation of Hawaii by the United States, which led to the illegal overthrow of the Hawaiian monarchy. The subsequent acts passed by Congress returned over a million acres of land to the state. This land was meant to be held in trust to benefit Native Hawaiians, revealing the change in land ownership dynamics post-colonization and annexation.
In summary, both the Great Māhele and the annexation of the Hawaiian Islands are key historical events that support the main idea of the divided ownership of land in Hawaii between the state and private owners, impacting the living conditions and culture of Native Hawaiians.