King William was not satisfied with the settlement drawn up in London and did not accept Belgium's claim of independence: it divided his kingdom and drastically affected his Treasury.
From 2–12 August 1831 the Dutch army, headed by the Dutch princes, invaded Belgium, in the so-called "Ten Days' Campaign", and defeated a makeshift Belgian force near Hasselt and Leuven.
Only the appearance of a French army under Marshal Gérard caused the Dutch to stop their advance.
 While the victorious initial campaign gave the Dutch an advantageous position in subsequent negotiations, the Dutch were compelled to agree to an indefinite armistice, although they continued to hold the Antwerp Citadel and occasionally bombarded the city until French forces forced them out in December 1832.
William I would refuse to recognize a Belgian state until April 1839, when he had to yield under pressure by the Treaty of London and reluctantly recognized a border which, with the exception of Limburg and Luxembourg, was basically the border of 1790.
King William was not satisfied with the settlement drawn up in London and did not accept Belgium's claim of independence: it divided his kingdom and drastically affected his Treasury. From 2–12 August 1831 the Dutch army, headed by the Dutch princes, invaded Belgium, in the so-called "Ten Days' Campaign", and defeated a makeshift Belgian force near Hasselt and Leuven. Only the appearance of a French army under Marshal Gérard caused the Dutch to stop their advance.  While the victorious initial campaign gave the Dutch an advantageous position in subsequent negotiations, the Dutch were compelled to agree to an indefinite armistice, although they continued to hold the Antwerp Citadel and occasionally bombarded the city until French forces forced them out in December 1832. William I would refuse to recognize a Belgian state until April 1839, when he had to yield under pressure by the Treaty of London and reluctantly recognized a border which, with the exception of Limburg and Luxembourg, was basically the border of 1790.
Belgian Revolution