Suppose you get access to a time machine. It could take you back to any historical time and place in say the last 4000 years. It takes you back in time, and brings you back to 2004 when you wanted to come back, but it can only be used for one round trip. Your mission in going back in time is to change the course of history for the better. You can only take the clothes on your back, as much money as you want in a form recognizable in the time and place you want to go back to, and the clothes on your back, and of course your knowledge of how history evolved. You can stay for up to a year. What would you do?