Complex sentence: As an important promise of the 1972 Canadian election the Federal Liberals promised to improve Toronto's waterfront and simply gave the heavily polluted lands to the City of Toronto which simply had no funds to clean up the 150 years of industrial pollution.
Split into simpler sentences: As an important promise of the 1972 Canadian election the Federal Liberals promised to improve Toronto's waterfront. The federal government gave the heavily polluted lands to the City of Toronto, but it had no funds to clean up the 150 years of industrial pollution.