Modernization theory holds that as societies become more economically modernized, wealthier and more educated, their political institutions become increasingly liberal democratic. The "classical" theories of modernization of the 1950s and 1960s, most influentially articulated by Seymour Lipset, drew on sociological analyses of Karl Marx, Emile Durkheim, Max Weber, and Talcott Parsons. Modernization theory was a dominant paradigm in the social sciences in the 1950s and 1960s, and saw a resurgence after 1991, when Francis Fukuyama wrote about the end of the Cold War as confirmation on modernization theory.