Final answer:
The assimilation policies implemented by the U.S. government, such as boarding schools, forced Native American children to abandon their tribal traditions and adopt Euro-American customs, thus suppressing their culture.
Step-by-step explanation:
The assimilation policies implemented by the U.S. government, such as the Americanization policy and boarding schools, suppressed Native American culture. Native children were forcibly removed from their homes and sent to boarding schools where they were forced to abandon their tribal traditions and adopt Euro-American customs. These schools aimed to eradicate Native languages, clothing, and social customs and replace them with a more Euro-American lifestyle, which led to the suppression of Native culture.