To promote assimilation, American Indian children were
One of the actions that were done to promote assimilation among American Indians, both in the US and in Canada, but also for example in Denmark, is compulsory sending them to boarding schools.
In those schools, the children were forbidden to speak their indigenous language, and many came home (if they were allowed to come home) without being able to communicate with their parents.
Answer:
Answer is B: Forbidden to speak their native language
Explanation: