Complex sentence: In the early 1980s, Gibson, faced with excess production capacity and, some claim, a difficult relationship with its labor union, closed its historic Parsons Street factory in Kalamazoo, Michigan and relocated much of its production to its factory in Nashville, Tennessee.
Split into simpler sentences: In the early 1980s, Gibson was faced with excess production capacity and, some claim, a difficult relationship with its labor union. Whatever the reason, Gibson closed its historic Parsons Street factory in Kalamazoo, Michigan and relocated much of its production to its factory in Nashville, Tennessee.