For 10 points, name this European country whose 1914 invasion started the Western Front of World War I.
The 1879 establishment of state-run, secular schools in this country started the School War, which led to an 1884 election beginning 30 years of dominance by the Catholic Party. G.M. Roentgen and David Mushet helped establish an iron works run by John Cockerill in this country's city of Seraing. An 1860 trial in this country that resulted in the wrongful execution of two men was a cause of the 1898 Equality Law, which established a second national language. A revolution in this country started following a performance of the opera The Mute Girl of Portici. Article VII of the 1839 Treaty of London guaranteed this country's independence and perpetual neutrality. For 10 points, name this European country whose 1914 invasion started the Western Front of World War I.
The 1879 establishment of state-run, secular schools in this country started the School War, which led to an 1884 election beginning 30 years of dominance by the Catholic Party.
Kingdom of Belgium [or Royaume de Belgique; or Koninkrijk Belgie; or Koenigreich Belgien]