Complex sentence: Transnet, the parent company of SAA ceased funding the airline in March 2000 as its rationale was to force the two nations in opening their regional and domestic routes to the airline, thus making it the defacto regional carrier.
Split into simpler sentences: Transnet, the parent company of SAA ceased funding the airline in March 2000. Its rationale was to force the two nations in opening their regional and domestic routes to the airline, thus making it the defacto regional carrier.