Hawaiian history

[leilanidude]

"Except that Hawaiians did not have a written language... "

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Uh... no. 

"In 1834, the first Hawaiian-language newspapers were published by missionaries working with locals. The missionaries also played a significant role in publishing a vocabulary (1836)[38] grammar (1854)[39] and dictionary (1865)[40] of Hawaiian. The Hawaiian Bible was fully completed in 1839; by then, the Mission had such a wide-reaching school network that, when in 1840 it handed it over to the Hawaiian government, the Hawaiian Legislature mandated compulsory state-funded education for all children under 14 years of age, including girls, twelve years before any similar compulsory education law was enacted for the first time in any of the United States."

https://en.wikipedia.org/wiki/Hawaiian_language

You skipped an important part of that wiki page you quoted.

In 1820, Protestant missionaries from New England arrived in Hawaiʻi, and in a few years converted the chiefs to Congregational Protestantism, who in turn converted their subjects. To the missionaries, the thorough Christianization of the kingdom necessitated a complete translation of the Bible to Hawaiian, a previously unwritten language, and therefore the creation of a standard spelling that should be as easy to master as possible. The orthography created by the missionaries was so straightforward that literacy spread very quickly among the adult population; at the same time, the Mission set more and more schools for children.