Complex sentence: In 1697, the Huron chief Kondiaronk from Michilimackinac led an attack on the Seneca on Lake Erie which resulted in a crushing victory and dashed the Iroquois' hopes for victory against the French.
Split into simpler sentences: In 1697, the Huron chief Kondiaronk from Michilimackinac led an attack on the Seneca at Lake Erie. He gained a crushing victory and dashed the Seneca hopes for victory against the French.