hello. this post has been removed as a "throughout history" trivia-type question, which are not permitted in this sub. Here's the rule:

http://www.reddit.com/r/AskHistorians/wiki/rules#wiki_no_.22in_your_era.22_or_.22throughout_history.22_questions

Do repost if you can narrow if you're interested in a particular region/culture and preferably time period.