The ten countries with the lowest development in the world, with regard to income, standard of living, and life expectancy, are all found in which geographic region? a. asia b. africa c. europe d. the middle east

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years