"Rattachism", the French irredentist trend in the Walloon Movement, is a good example of this love for the French republic. This sentiment is notably expressed by Albert du Bois, who in his book ""The Belgians or the French?"", published in 1903, denounces the subjection of the Walloons to the Flemings, who are merely the successors of the previous Dutch, Austrians and Spanish occupiers of Wallonia. The French soul of the Walloons must drive them to yearn for a return to "l'œuvre de Quatre-vingt-treize" (the invasion of the Southern Netherlands provinces by the French in 1793) and the destruction of the international agreements of 1814 and 1830. The same thesis is developed in the "Walloon's Catechism", widely distributed in the same year of 1903.""