Complex sentence: Formerly known as Frobisher Bay, after the large bay on the coast of whom the city is situated until 1987, Iqaluit became the capital city after the Nunavut Act of 1999 officially split the vast, sparsely-populated Northwest Territories into two separate territories.
Split into simpler sentences: Formerly known as Frobisher Bay, after the large bay on the coast of whom the city is situated until 1987. In 1999, Iqaluit became the capital city after the division of the Northwest Territories into two separate territories.