how did European colonizers use systemic racism to justify their cruelty to indigenous people?

a-European colonizers molded their society and intuition to benefit indigenous people, no others.
b-European colonizers were not racist or cruel to indigenous people.
c-European colonizers molded their society and institution to benefit themselves, not others.
d-European colonizer believed they were "superior" to no one, which justified their cruelty.

c-European colonizers molded their society and institution to benefit themselves, not others.

European colonizers used systemic racism to justify their cruelty to indigenous people by portraying them as inferior and less developed, therefore legitimizing their exploitation and mistreatment. They believed in their superiority and used this belief to justify their actions, viewing indigenous people as obstacles to be conquered and controlled. This allowed them to rationalize and perpetuate injustices such as forced relocation, land theft, violence, and cultural assimilation.