Complex sentence: In 1980, Interco added furniture as a major division, buying Ethan Allen Inc. and Broyhill Furniture Industries, a North Carolina company that was the world's largest privately owned furniture maker.
Split into simpler sentences: In 1980, Interco added furniture as a major division. Interco also took over Broyhill Furniture Industries, a North Carolina company that was the world's largest privately owned furniture maker.