The Republic of Bouillon was a short-lived French client republic, around the city of Bouillon in present-day Belgium, based on the duchy of Bouillon, which had existed between France and the Austrian Netherlands since the 15th century. Reforms, sponsored by the duke, abolishing manorialism and feudalism and establishing a constitutional basis for the monarchy did not prevent what many sources describe as the proclamation of a republic in April 1794. The republic was short-lived, however, as the territory was annexed by the French First Republic 18 months later. In 1815, after the Napoleonic Wars, the duchy was absorbed into the promoted Grand Duchy of Luxembourg, becoming a part of Belgium when that nation was founded in the 1830s.