Although Leaders of Government (French: Chefs de Cabinet) had been appointed since the independence of the country, until 1918 the King often presided over the Council of Ministers, so the modern era of the "Premiership" started after WWI with Léon Delacroix.
1 Entirely in Southwest Asia; included here because of cultural, political and historical association with Europe. 2 Partially or entirely in Asia, depending on the definition of the border between Europe and Asia.