. What is the Malthusian population trap? In the context of the Malthusian population trap, explain the role of OECD countries in helping a country out of a population trap. . According to Sachs, what is the demographic trap? Why will a demographic trap prevent a country from reaching a higher level of development? . What is the Millennium Villages Project? According to Sachs, how large of a development assistance was needed in order to get the project going