The document discusses various challenges faced by Aboriginal peoples in Canada over the 20th century, including the Indian Act, residential schools, reserves, and treaty negotiations. The Indian Act aimed to assimilate Aboriginal peoples and undermined their rights, languages, and cultures. Residential schools separated children from their families and communities. Aboriginal peoples responded to these challenges through protests and legal challenges, and increasingly demanded self-government. By the late 20th century some gains were made, including land claims rulings, apologies for abuses, and the creation of Nunavut territory with Inuit self-governance.