Foreign Relations. This plan called for massive loans to Germany. Under this plan I. G. Farben received a loan of $30 million from the Rockefeller's National City Bank. It would not have been possible for the German war machine to have been rebuilt after World War I without help from financial circles in the United States. The Krupp munitions works was salvaged by a $10 million oan from companies in New York, as was the Farben controlled steel works with a $100 million loan. with I. G. Farben creating interlocking business interests around the world. Throughout World War II this was kept secret by a complicated network of companies set up for that purpose. American technology, engineering, and entire American technology, engineering, and entire companies went to Germany. Many of these companies made profits supplying war materials for both sides of the war. While American companies were making profits on the German side, I. G. Farben was making profits on and entire During the Nuremberg Trials it was learned that the business leaders of I. G. Farben had controlled the Nazi state. Farben operated such concentration camps as Auschwitz and Buchenwald. Although Farben was the backbone of the Nazi war machine, its influence was so great that its headquarters buildings in Frankfort, Germany were off limits to American bombardiers. These buildings survived the war unharmed. 99 Building Modern Babylon States after World War I and backed by the Council on In 1928 John D. Rockefeller, Sr. formed a partnership ‘technology, the American side.