Original sentence: Between independence and World War II, the democratic system evolved from an oligarchy characterised by two main parties, the Catholics and the Liberals, to a universal suffrage system that has included a third party, the Labour Party, and a strong role for the trade unions.Originally, French, which was the adopted language of the nobility and the bourgeoisie, was the official language.Since the installation of Leopold I as king in 1831, Belgium has been a constitutional monarchy and parliamentary democracy.The 1830 Belgian Revolution led to the establishment of an.The country has since developed a bilingual Dutch-French system, but only in 1967 an official Dutch version of the Constitution was accepted.independent, Catholic and neutral Belgium under a provisional government and a national congress
Edited sentence: French as single official language and adopted by the nobility and the bourgeoisie, had lost its overall importance as Dutch had become recognized as well, but only in 1967 an official Dutch version of the Constitution was accepted.Initially an oligarchy characterized mainly by the Catholic Party and the Liberals, by World War II the country had evolved towards universal suffrage, the Labour Party had risen, and trade unions already played a strong role.Since the inauguration of Leopold I as king in 1831, Belgium has been a constitutional monarchy and parliamentary democracy.The 1830 Belgian Revolution led to the establishment of an independent, Catholic and neutral Belgium under a provisional government and a national congress