Aristotle, Machiavelli, Adam Smith, John Locke, Durkheim, Pareto, Nietzche, the Federalist Papers, the US Constitution. “Albion’s Seed”. Fukuyama’s Trust and his two books on the History of political orders.
https://www.quora.com/What-should-an-Indian-lawyer-study-to-get-a-job-in-the-USA