Complex sentence: As a result of Lewis L. Strauss' association with Kuhn, Loeb & Co., he became friendly with many wealthy and influential American Jewish figures, especially the core members of the American Jewish Committee.
Split into simpler sentences: As a result of Lewis L. Strauss' association with Kuhn, Loeb &. Company, he became friendly with many wealthy and influential American Jewish figures, especially the core members of the American Jewish Committee.