Complex sentence: The occupants of this parallelogram of some forty log cabins withstood several American Indian attacks, the most important of which occurred in August 1782 when they were besieged by about 300 Indians and Canadians under Captain William Caldwell and Simon Girty.
Split into simpler sentences: The occupants of this parallelogram of some forty log cabins withstood several American Indian attacks. The most important occurred in August 1782 when they were besieged by about 300 Indians and Canadians under Captain William Caldwell and Simon Girty.