The challenge? Timbuktu, a city that was once one of the most prosperous and advanced of civilization eventually fell when the Portuguese discovered the Cape of Good Hope and several other trading routes to bypass Timbuktu during the spice trade and the slave trade. The challenge is to have Timbuktu remain wealthy and prosperous up to present day. The reason I'm asking this: I'm curious and really don't think it's possible, unless they start ambushing the Portuguese off the coast of Africa. Anyone feel like taking the challenge?