Johnson & Johnson grew to more than $250$ business units, primarily though acquisition. Most of the companies acquired were left to their own operation and management creating a highly diversified corporation. As we discussed in the J&J case, and based on your reading, $1)$ EXPLAIN the main advantage to this kind of diversification and HOW it helped J&J to grow, $2)$ EXPLAIN the main disadvantage to this kind of diversification and HOW it hurt J&J$,$ and finally, $3)$ describe the changes they made to fix the problems.