World 0.0
Food was an obvious focus: the major occupational categories were foraging, hunting, and rudimentary farming. Security was critical as well.
World 1.0
While nations did have some military interactions, they were largely self-contained; culture, society, and economics had a strongly national/local cast.
World 2.0
… the trend toward deregulation …
… a state of affairs that supposes competition over everything from everywhere …
World 3.0
"World 3.0: Global Prosperity and How to Achieve It" by Pankaj Ghemawat