Andrew Carnegie: Andrew Carnegie was born on November 25, 1835, in Dunfermline, Scotland. After moving to the United States, he worked a series of railroad jobs. By 1889 he owned Carnegie Steel Corporation, the largest of its kind in the world. In 1901 he sold his business and dedicated his time to expanding his philanthropic work, including the establishment of Carnegie-Mellon University in 1904. John D. Rockefeller: American industrialist John D. Rockefeller was born July 8, 1839, in Richford, New York. He built his first oil refinery near Cleveland and in 1870 incorporated the Standard Oil Company. By 1882 he had a near-monopoly of the oil business in the U.S., but his business practices led to the passing of antitrust laws. Late in life, Rockefeller devoted himself to philanthropy. He died in 1937. Alexander Graham Bell: Alexander Graham Bell was born on March 3, 1847, in Edinburgh, Scotland. His education was largely received through numerous experiments in sound and the furthering of his father’s work on Visible Speech for the deaf. Bell worked with Thomas Watson on the design and patent of the first practical telephone. In all, Bell held 18 patents in his name alone and 12 that he shared with collaborators. He died on August 2, 1922, in Cape Breton Island, Nova Scotia, Canada