'' by
Auguste Couder, 1836. French victory at
Lauffeld in July 1747 ended Allies° hopes of regaining Flanders Discussions began in August 1746, led by
John Montagu, 4th Earl of Sandwich and the
Louis Philogène Brûlart, vicomte de Puisieulx. Sandwich and the British delegation were based near
Breda Castle lent to them by
William IV, Prince of Orange. Negotiations proceeded slowly, since the British wanted to extend discussions long enough for their position in Flanders to improve. On the other side, France wanted to reach agreement immediately, the terms including making the
Low Countries neutral territory in future conflicts; these were drawn up by
Gabriel de Mably, who shortly afterwards fell from favour. Unsatisfied by his performance, the French recalled Puisieux and replaced him, giving Sandwich an opportunity to delay by demanding his replacement prove his accreditation. There were further delays when a Spanish delegate turned up, claiming to represent
Ferdinand VI, the new king of Spain. The British were kept informed of French negotiating strategy, as letters to the French delegates were intercepted and copied by postmasters in British pay. , October 1747; defeat forced France to suspend naval operations, putting their entire
colonial empire in jeopardy Sandwich also played a key role in
the coup that brought William of Orange to power in the Netherlands. Previously neutral, Newcastle viewed Dutch entry into the war as a way to boost the anti-French coalition in Flanders but it soon proved otherwise. The Dutch required massive British financial support, while the Allied position further deteriorated with defeat at
Lauffeld in July and the loss of
Bergen op Zoom in September. Newcastle berated himself for his "ignorance, obstinacy and credulity" and fully expected to be forced from office as a result. Despite previously insisting negotiations must include all parties, the British delegation now agreed to settle terms with France prior to confirmation by their allies. They arguably underestimated the impact of victory at
Second Cape Finisterre in October, which effectively ended French naval operations and put their entire colonial empire at risk. The North American fortress of
Louisbourg,
captured by Britain in 1745, was exchanged for
Madras, India,
captured by France in 1746; France agreed to withdraw from the
Low Countries, while both parties recognised
Prussian control of
Silesia. ==Aftermath==