A world's history, both geological and life related, is important to how the world is in its modern day. All new things are founded upon the past, and knowledge or omission of historical events plays into this in a huge way. So tell me, how do you use your world's history in its setting? Do you purposefully omit things that the modern peoples know nothing of? Do you have them believe in events that never took place? Are genealogy and history a huge obsession for your culture? What about archaeology? What do you think and how have you used history, knowledge of history, and omission of history in your worlds and how you can use them in the future?