The French Revolution lead to massive political change in continental Europe, as people following the ideas of Enlightenment asked for human rights with the slogan "liberté, egalité, fraternité" (liberty, equality, fraternity). That led to the Declaration of the Rights of Man and of the Citizen, but also to terror and the execution of King Louis XVI. The French leader, Napoleon Bonaparte, conquered and changed Europe through war up to 1815. As more and more small property holders were granted the vote, in France and the UK, socialist and trade union activity developed and revolution gripped Europe in 1848. The last vestiges of serfdom were abolished in Austria-Hungary in 1848. Russian serfdom was abolished in 1861. The Balkan nations began to regain their independence from the Ottoman Empire. After the Franco-Prussian War, Italy and Germany became unified in 1870 and 1871. Conflict spread across the globe, in a chase for empires. The search for a "place in the sun" ended with the outbreak of World War I. In the desperation of war, the Russian Revolution promised the people "peace, bread and land". The defeat of Germany came at the price of economic destruction, which was written down in the Treaty of Versailles.