Final answer:
Missionaries did not preserve the Hawaiian language and culture; instead, they brought Christianity, education, and Western customs, which often led to the diminished practice of indigenous traditions.
Step-by-step explanation:
The changes that did not occur when missionaries came to Hawaii is the preservation of the Hawaiian language and culture. While missionaries were earnest in their desire to improve the lives of native populations by introducing Christianity, education, medicine, and modernization, their arrival often resulted in the diminished practice and sometimes loss of indigenous languages and traditions. Christian missionaries introduced Christianity and Christian practices, established schools and education, and influenced the adoption of Western-style clothing and customs among the Hawaiian people.