French westward expansion in the 1670s and 1680s cut off the Haudenosaunee (Iroquois) Confederacy from new sources of beaver and threatened New York's fur trade. As long as France and England were at peace, little could be done to impede French traders, but New York authorities could encourage the Haudenosaunee on the warpath. On the morning of 5 August 1689 some 1500 warriors fell on the little settlement of Lachine just west of Montréal, killing 24 settlers and capturing more than 60 others. The ferocity of this attack terrorized the inhabitants of the Montréal region, who were to suffer many more such raids in the following decade.
See also Iroquois Wars.