Which city was once a city of industry, but now is a symbol of urban
a. detroit
b. washington,
d. c
c. new york
d. atlanta

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.