Unionism in Belgium

In the politics of Belgium, Unionism or Union of Opposites (union des oppositions) is a Belgian political movement which existed from the 1820s to 1846. In the present day, the term 'unionists' is sometimes used in a Belgian context to describe those who oppose the partition of Belgium, such as members of the Belgische Unie – Union Belge party.

It existed before and after the Belgian Revolution of 1830 and advocated the union of Roman Catholics and liberals against the policies of William I of the Netherlands. The new nation's motto, L'Union fait la force or unity makes strength, referred to this union rather than to the union of the country's different linguistic communities.

The liberals were initially quite favourable towards the lay policy of William's enlightened absolutism but more and more they changed their attitude, giving less and less importance to their struggle against church influence and more and more importance to political liberties, which William I was obstinately refusing to grant. Those following this new trend were known as 'radical liberals', as opposed to the 'Voltairian liberals' (libéraux voltairiens) who supported the englightened absolutist regime and gave rise to Orangism.

This evolution enabled the 'radical liberals' to make a compromise with the Catholics, who were ready to make certain concessions as to the freedom of the press and freedom of religion in return. From 1825, Étienne de Gerlache made a failed attempt at a compromise and reconciliation. At the end of 1827, in Liège, the Catholic newspaper le Courrier de la Meuse and the liberal newspaper Mathieu Laensbergh underwent a rapprochement. The union was decisively concluded on 8 November 1828 when the liberal Brussels newspaper le Courrier des Pays-Bas rallied to this policy in an article by Louis De Potter.

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