Complex sentence: Farming in the area is dedicated almost entirely to horses and merino sheep, while In a sheep-farming area spread over half-a-million hectares, greater Colesberg breeds many of the country's top merinos.
Split into simpler sentences: Farming in the area is dedicated almost entirely to horses and merino sheep. While in a sheep-farming area spread over half-a-million hectares, greater Colesberg breeds many of the country's top merinos.