Complex sentence: Coronado and his supporters sank a fortune in this ill-fated enterprise taking 1300 horses and mules for riding and packing and hundreds of head of sheep and cattle as a portable food supply.
Split into simpler sentences: Coronado and his supporters sank a fortune in this ill-fated enterprise. They took 1300 horses and mules for riding and packing, and hundreds of head of sheep and cattle as a portable food supply.