To understand "where modern political institutions came from"
Follow the thinkers’ line: Hobbes says people covenant to hand power to a sovereign, Locke rebuts that government power is limited and the people may resist, Montesquieu gives the skeleton of checks and balances, Rousseau cries popular sovereignty — then see how Jefferson wrote these into the Declaration. You find that today’s constitutions and democracy did not appear from nowhere, but from a centuries-long relay over "how to cage power."