Starting not with the United States, but with the Corsican constitution of 1755, The Gun, the Ship, and the Pen moves through every continent, disrupting accepted narratives. Both monarchs and radicals play a role, from Catherine the Great of Russia, with her remarkable Nakaz, to Sierra Leone´s James Africanus Horton, to Tunisia´s Khayr-al-Din, a creator of the first modern Islamic constitution. Throughout, Colley demonstrates how constitutions evolved in tandem with warfare, and how they have functioned to advance empire as well as promote nations, and worked to exclude as well as liberate.