Lines drawn across a continent

Before 1803, Europe was a patchwork of duchies, electorates, and free cities. By 1815, the map had been flattened and redrawn. The Napoleonic Wars did not merely shift borders—they invented the modern nation-state. In Spain, guerrilla warfare became a template for national resistance. In Germany, the dissolution of the Holy Roman Empire forced small states into new confederations. In Russia, the s...