Why was flooding of the nile river a good thing? ?

What happened right after the battle of concord ?

Indicate the point where a monopoly will set its price

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.