Complex sentence: In 1928, the Studebaker Corporation of South Bend, Indiana, gained control of the Buffalo firm, an association which was to last for five years with moderate benefits to both companies' engineering departments--which continued to function as separate entities.
Split into simpler sentences: In 1928, the Studebaker Corporation of South Bend, Indiana, gained control of the Buffalo firm. The association was to last for five years, with moderate benefits to both companies' engineering departments, which continued to function as separate entities.