Douaumont ossuary. With 4.3 million wounded from a population of only 39.6 million at the time,

After a short-lived governmental scheme, Napoleon Bonaparte seized control of the Republic in 1799 and was appointed by plebiscite[53] First Consul and later Emperor of the French Empire (1804–1814/1815). As a continuation of the wars sparked by the European monarchies against the French Republic, changing sets of European Coalitions declared wars on Napoleon's French Empire. His armies conquered most of continental Europe, while members of the Bonaparte family were appointed as monarchs in some of the newly established kingdoms.[54]
These victories led to the worldwide expansion of French revolutionary ideals and reforms, such as the Metric system, the Napoleonic Code or the Declaration of the Rights of Man and of the Citizen. After the catastrophic Russian campaign, Napoleon was finally defeated and the Bourbon monarchy restored. About a million Frenchmen died during the Napoleonic Wars.[54]


Douaumont ossuary. With 4.3 million wounded from a population of only 39.6 million at the time, the Third French Republic sustained the highest number of total casualties among the Allies during the First World War.
After his brief return from exile, Napoleon was finally defeated in 1815 at the Battle of Waterloo, the monarchy was re-established (1815–1830), with new constitutional limitations. The discredited Bourbon dynasty was overthrown by the civil uprising of 1830, which established the constitutional July Monarchy, which lasted until 1848, when the French Second Republic was proclaimed, in the wake of the 1848 European revolutions. The abolition of slavery and the male universal suffrage, both briefly enacted during the French Revolution were finally re-enacted in 1848.
In 1852, the president of the French Republic Louis-Napoléon Bonaparte, Napoleon I’s nephew, was proclaimed emperor of the second Empire, as Napoleon III. He multiplied French interventions abroad, especially in Crimea, in Mexico and Italy, which resulted in the annexation of Savoy and Nice. Napoleon III was eventually unseated following defeat in the Franco-Prussian war of 1870 and his regime was replaced by the Third Republic.
France had colonial possessions, in various forms, since the beginning of the 17th century to the 18th century. In the 19th and 20th centuries, its global overseas colonial empire extended greatly and culminated as the second largest in the world behind the British Empire. At its peak, between 1919 and 1939, the second French colonial empire extended over 12,347,000 square kilometres (4,767,000 sq mi) of land. Including metropolitan France, the total area of land under French sovereignty reached 12,898,000 square kilometres (4,980,000 sq mi) in the 1920s and 1930s, which is 8.6% of the world's land area.


Charles de Gaulle took an active part in all major events of the 20th century : a hero of World War I, leader of the Free French during World War II, he then became President, where he facilitated the decolonization, maintained France as a major power and overcame the May 1968 revolt.
France was a member of the Triple Entente when World War I broke out. A small part of Northern France was occupied, but France and its allies eventually emerged victorious against the Central Powers, at a tremendous human and material cost: the First World War left 1.4 million French soldiers dead, 4.29% of its population,[55] between 27 and 30% of the conscript classes of 1912-1915