Sorry, we don't allow throughout history questions. These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a culture/region and timeperiod, please feel free to re-compose your question and submit it again. As it is, the post specifies no particular place (i.e. everywhere) & 'BC' covers almost all of human existence. Questions of this type can be directed to more appropriate subreddits, such as /r/history or /r/askhistory.