Suppose government deregulation of an industry leads to the failure of
several companies in that industry. Does that mean
deregulation was a mistake? Why or why not?
(Economics)

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.