Final answer:
Andrew Carnegie blamed J.P. Morgan for driving Tom Scott to his grave because Morgan's aggressive business tactics and buyouts led to considerable stress for competitors.
Step-by-step explanation:
Andrew Carnegie blamed J.P. Morgan for driving Tom Scott to his grave. Carnegie had worked his way up with Scott's guidance and made significant investments under his tutelage. However, it was the business dealings with J.P. Morgan, including the sale of Carnegie's steel company, which escalated into the creation of U.S. Steel Corporation, that Carnegie seemed to suggest played a part in the undue stress that contributed to Scott's demise. Morgan, born into wealth and a more aggressive banker than Carnegie, was known for buying out successful entrepreneurs like Carnegie to create larger, more efficient enterprises, which also meant great stress for those who could not keep up or compete.