1. A) Hudson River and Lake Eerie.
2. C) Although they did not cut out Humans altogether, a lot of the work was done by machine.
3. B) Tom Thumb
4. C) To provide Drinking Water
5. C) They accepted lower wages to work. Men often went out and did the harder jobs, such as building, and many men didn't want to work in factories.
6. D) Paid Vaccinations. Some workers may have been given vaccinations by their employers, but it is unlikely that many would have.
7. B) Eli Whitney invented the Cotton Gin
Hope this helps :)