Napoleon Bonaparte seized control of the Republic in 1799 becoming 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 Empire. His armies conquered most of continental Europe with swift victories such as the battles of Jena-Auerstadt or Austerlitz. Members of the Bonaparte family were appointed as monarchs in some of the newly established kingdoms.