We will work on the lab tomorrow and Friday, and the completed project presentations are due Monday.
In social studies, we reviewed why China failed to expand (cultural isolationism and the need to divert funds to prevent invasions,) Cahokia failed to expand (competition for resources, misallocation of resources to build unnecessary things, and a too heavy dependence on slavery,) and why Timbuktu failed to expand (their salt mines ran out of salt, and their economy could no longer support the military necessary to maintain its borders.)