 SPRINGFIELD, Mass.--BUSINESS WIRE--Massachusetts Mutual Life Insurance Company MassMutual announced today the completion of the previously announced acquisition of American Financial Group, Inc.s NYSE:AFG wholly owned subsidiary, Great American Life Insurance Company Great American Life, and other subsidiaries and affiliated entities, for a purchase price of approximately 3.5 billion. We are excited to welcome Great American Life to MassMutual and to help build on its outstanding 