Across
- 1. dominated american finance
- 7. year fist transcontinental railroad was built
- 8. bell's invention
- 9. seeks to promote welfare of others
- 10. wizard of menlo park
Down
- 2. dominated iron and steal industries
- 3. wireless transmitter
- 4. created a cheap way to transform iron into stronger lighter steel.
- 5. dominated the oil industry during the gilded age
- 6. the exclusive possession or control of the supply of or trade in a commodity or service.