Complex sentence: Although Streetsville, along with Clarkson, Port Credit and Meadowvale, was excluded from this amalgamation, the writing was on the wall, and in 1974, they were all annexed when Mississauga became a city.
Split into simpler sentences: Although Streetsville, along with Clarkson, Port Credit and Meadowvale, was excluded from this amalgamation. The writing was on the wall and in 1974 they were all annexed when Mississauga became a city.