Complex sentence: Othermothers are women, including mothers, who provide care for children who are not biologically their own and was a common practice in black communities in America as early as slavery and has roots in the traditional African world-view.
Split into simpler sentences: Othermothers are women, including mothers, who provide care for children who are not biologically their own. The institution of othermothers was a common practice in black communities in America since early as slavery and has roots in the traditional African world-view.