There she built speedily the fortress of Louisbourg, and prepared once more to challenge British supremacy in America.
In 1744, when the war of the Austrian Succession broke out, the New England colonies planned and in 1745 effected the capture of Louisbourg, the stronghold of France in Cape Breton Island, which menaced their commerce.
He published a Journal of the Siege of Louisbourg (1745), and The Conduct of General William Shirley Briefly Stated (1758).
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