If people are to exercise aerobically, first they must know that aerobic exercise exists, and second they need to know how to do it properly. This is an example of

Bis your correct answer

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.

Abortion would be the most interesting topic to me