Name three countries in eastern europe (that were mentioned in your reading) where immigrants came from to work in the united states under harsh conditions just for the privilege to have a steady job:

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.