That invasion should really be taught more widely - there are so many angles to it (the approaches of the various Spanish discovery expeditions, what Cortes did, how the Mexican state responded to finding out that they did not in fact control most of the world, how the natives that assisted the Spanish (especially the Tlaxcala) acted and why, the personalities of the conquistadors and the Mexica themselves, how the Mexica resisted, the financial effects of the conquest and the debate afterwards over whether the people in the newly conquered territories were human or not) that the amount of learning it can provide is probably unequaled by any other event in history.