Complex sentence: In 1938, the Lions Gate Bridge was completed and took away much business from the ferries, however, there was an increased demand with the onset of World War II because of the shipbuilding boom in North Vancouver.
Split into simpler sentences: In 1938, the Lions Gate Bridge was completed and took away much business from the ferries. However, there was an increased demand with the onset of World War II because of the shipbuilding boom in North Vancouver.