Complex sentence: At its inception, Barrie was an establishment of houses and warehouses at the foot of the Nine Mile Portage from Kempenfelt Bay to Fort Willow, an aboriginal transportation route that existed centuries before Europeans came to Simcoe County.
Split into simpler sentences: At its inception, Barrie was an establishment of houses and warehouses at the foot of the Nine Mile Portage from Kempenfelt Bay to Fort Willow. The Nine Mile Portage is an aboriginal transportation route that existed centuries before Europeans came to Simcoe County.