What term describes all people who share similar characteristics but little else, such as all women attending college, all left-handed people, and all men over seven feet tall?

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.

Truehope this : )