What was a result of the conquest of Constantinople?

What is a characteristic of hunter-gatherer societies?

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.

Which of the following best explains why the rhine-ruhr area became a major industrial area ?