: The invention of the steam engine, the development of railways, and the later "Age of Electricity" accelerated trade and urban growth.
: This became a driving force, leading to the unification of Italy and Germany, which fundamentally changed the balance of power in Europe.
By 1913, the world was more interconnected yet more divided than ever before. Scientific triumphs and economic growth existed alongside deep social inequality and aggressive militarism, setting the stage for the cataclysm of World War I.
: The Napoleonic Wars spread revolutionary ideas across Europe, even as they brought destruction.



: The invention of the steam engine, the development of railways, and the later "Age of Electricity" accelerated trade and urban growth.
: This became a driving force, leading to the unification of Italy and Germany, which fundamentally changed the balance of power in Europe.
By 1913, the world was more interconnected yet more divided than ever before. Scientific triumphs and economic growth existed alongside deep social inequality and aggressive militarism, setting the stage for the cataclysm of World War I.
: The Napoleonic Wars spread revolutionary ideas across Europe, even as they brought destruction.