In 1999, MCI WorldComm and Sprint agreed to merge. Valued at $129 billion, this expected transaction was the largest in history. However, it fell victim to regulators in Europe concerned with the potential monopoly power of the merged firm. This M&A action was merely the latest in a growing trend of "blockbuster" mergers over the past several years. Once a phenomenon seen primarily in the United States, mergers and acquisitions are increasingly being...