Complex sentence: The Urban Transportation Development Corporation Ltd. (UTDC) was an Ontario, Canada, Crown corporation created in the 1970s as a way to enter what was then expected to be a burgeoning market in advanced light rail mass transit systems.
Split into simpler sentences: The Urban Transportation Development Corporation Ltd. (UTDC) was a Crown corporation owned by the Government of Ontario, Canada. It was created in the 1970s as a way to enter what was then expected to be a burgeoning market in advanced light rail mass transit systems.