| A | B |
|---|
| Alexander Graham Bell | Developed the telephone service |
| Pittsburgh | City known for steel |
| Chicago | City known for meat packing |
| oil | John D. Rockefeller was a leader in this industry. |
| henry Ford | He developed use of the assembly line |
| mechanization | replacing people or animals with machines |
| Andrew Carnegie | Was a leader in the steel and is associated with the city of Pittsburgh |
| Wright brothers | They had a successful airplane flight in Kitty Hawk, North Carolina. |
| Guglielmo Marconi | He was important in the development of the radio |
| Broadcast | David Sarnoff was important in this industry |
| Detroit | City famous for cars |
| captains of industry | leaders of big business |
| Thomas Edison | He is famous for his work in lighting and mechanical uses of electricity |
