own; land commitments were viewed as expensive and primarily of benefit to others. The Whigs argued France could not be defeated by seapower alone, making a Continental strategy essential, while Britain's financial strength made it the only member of the Alliance able to operate on all fronts against France. Dutch Republic Although the English Duke of Marlborough was Allied commander in the Low Countries, the Dutch provided much of the manpower, and strategy in this theatre was subject to their approval. The 1672 to 1678 Franco-Dutch War showed the Spanish could not defend the Southern Netherlands, and so the 1697 Treaty of Ryswick allowed the Dutch to place garrisons in eight key cities. They hoped this barrier would provide the strategic depth needed to protect their commercial and demographic heartlands around Amsterdam against attack from the south. However, with the help of Maximilian of Bavaria, the governor of the Spanish Netherlands, the Dutch garrison troops had been replaced by French troops by 1701. Dutch priorities were to re-establish and strengthen the Barrier fortresses, retain control of the economically vital Scheldt estuary, and gain access to trade in the Spanish Empire. Austria and the Holy Roman Empire Despite being the dominant power within the Holy Roman Empire, Austrian and Imperial interests did not always coincide. The Habsburgs wanted to put Archduke Charles on the throne of an undivided Spanish Monarchy, while their Allies were fighting to prevent either the Bourbons or the Habsburgs from doing so. This divergence and Austria's financial collapse in 1703 meant the campaign in Spain was reliant on Anglo-Dutch naval support and after 1706, British funding. Particularly during the reign of Joseph I, the priority for the Habsburgs was to secure their southern borders from French intervention in northern Italy and suppress Rákóczi's War of Independence in Hungary. Much of the Spanish nobility resented what they considered to be the arrogance of the Austrians, a key factor in the selection of Philip as their preferred candidate in 1700. In return for British support, Charles agreed to major commercial concessions within the Empire, as well as accepting British control of Gibraltar and Menorca. These made him widely unpopular at all levels of Spanish society, and he was never able to sustain himself outside the coastal regions, which could be supplied by the Royal Navy. The Wittelsbach-controlled states of Bavaria, Liège, and Cologne allied with France, but the vast