This chapter briefly examines what has been written and said about two of these oppressed groups: the colonized and women. The colonization of the world to gain resources so that a few countries could prosper, primarily European countries including Britain, Spain, Portugal, Belgium, and Germany, left a trail of havoc for those peoples living in colonized countries. Some of the main effects on Indigenous peoples arising from colonization include the following: brutalities, economic, community, social relationships, language use, control of resources, social relationships and control of ‘minds’. Most of the Diagnostic and Statistical Manual of Mental Disorders behaviours occur but not because there are similar brain or cognitive issues. Treatments varied but included assisting women to be more assertive in their dealings with men, although this can backfire since patriarchy still gives men the majority of positions of power and privilege in government and the authorities.