Three attempts were made by New England troops to recapture Acadia (1704, 1707, and 1710), the last being successful. The peace of Utrecht (1713) recognized England's right to Acadia, "with its ancient boundaries," but it brought only nominal peace to the New York and New England colonists. Unfortunately the northern and western boundaries of Acadia were not therein fixed, and the country between the Kennebec and the St. Lawrence was in as much dispute as ever. Border settlers all along the line from the Hudson to the Kennebec were in hourly peril of their lives from Indian scalping-parties. There was abundant proof that the authorities of New France, instructed by the government at Paris, were actively inciting the red savages to forays for scalps and plunder. This fact tended greatly to embitter the relations between the rival white races, and led to measures of reprisal. Sidenote: King George's War; capture of Louisbourg. The irregular War of the Austrian Succession when it extended to America was known as King George's War (1744-1748). The principal event was the capture (1744) by New England troops of the strong fortress of Louisbourg, on the island of Cape Breton. Having achieved so heroic a victory almost single-handed, New Englanders considered themselves slighted by the treaty of Aix-la-Chapelle (1748), by which Louisbourg was surrendered to France, and in other respects the unfortunate state of affairs existing before the war was restored. Disappointment was openly expressed, and tended still further to strain the relations between the colonies and the mother-land. 113. Territorial Claims. Sidenote: Boundary disputes. An attempt had been made at the convention at Aix-la-Chapelle to settle the boundary disputes in America by referring the matter to a commission. France now asserted her right to all countries drained by streams emptying into the St. Lawrence, the Great Lakes, and the Mississippi. This allowed, the narrow strip of the Atlantic coast would alone have been left to English domination. It was asserted on behalf of Great Britain that the charters of her coast colonies carried their western bounds to the Pacific; further, that as by the treaty of Utrecht France had acknowledged the suzerainty of the British king over the Iroquois confederacy, the English were entitled to all lands "conquered" by those Indians, whose war-paths had extended from the Ottawa River on the north to the Carolinas on the south, and whose forays reached alike to the Mississippi and to New England. For three years the commissioners quarrelled at Paris over these conflicting claims; but the dispute was irreconcilable; the only arbitrament possible was by the sword. Sidenote: The French line of frontier forts.