The next step was to secure the advantages that should accrue from the discoveries of Lasalle. To this end the fort at Niagara had already been built; and Fort Frontenac was next erected at the northern outlet of Lake Ontario to cut off the English from trade with the Indians. At the strait of Michillimackinac, between Lakes Huron and Michigan, a Jesuit mission sufficiently provided for the same object. Besides these there were established Fort Miamis by the south-eastern shore of Lake Michigan, to bar the passage from the lake to the Upper Illinois, Fort St. Louis, near the present site of Utica, to secure the trade with the tribes on the plains of the Illinois, and yet another fort on the Lower Mississippi. [Sidenote: 1682.] [Sidenote: 1687.] [Sidenote: 1688.] [Sidenote: 1689.] Such a monopoly of the Indian trade was by no means to the taste of the British and Dutch, nor of the Five Indian Nations, better known by the French name of Iroquois, whom they had taken under their special protection. Nevertheless, in their simple plodding industry, their zeal for religious controversy and their interminable squabbles over their boundaries, the English colonies took little heed to what was going on in the continent behind them. One man alone saw the danger from the first, namely, Colonel Thomas Dongan, an officer who had begun his career in the French army, but had left it for the British, and after some service at Tangier had been sent out as Governor to New York. Dongan, however, was at first unsupported either by the Government at Whitehall or by the neighbouring colonies. His protests were vigorous to discourtesy, but he had small means for enforcing them. One resource indeed he did possess, namely the friendship of the Iroquois, who were the dominant tribes of the continent; for with all their subtle policy and their passion for interference with native affairs, the French had never succeeded in alienating the Iroquois--who covered the flank of New York and New England towards Canada--from their alliance with the British. Dongan therefore assiduously cultivated a good understanding with these Indians against the moment when he should be allowed to act. Meanwhile the French went yet further in aggression. They destroyed the factories of the Hudson's Bay Company; they treacherously entrapped and captured a number of Iroquois at Fort Frontenac, plundered English traders, and repaired and strengthened the fort built by Lasalle at Niagara. Dongan's indignation rose to a dangerous height; and now at last came a reply from England to his previous reports, and an order to repel further aggression on the Iroquois by force. Assembling a force of local militia at Albany he first insisted on the destruction of the fort at Niagara; and then the Iroquois burst in upon Canada and spread terror to the very gates of Montreal. It was just at this crisis that William of Orange displaced James the Second on