Why did the United States fight in both Europe and Asia during World War 2

Explain how social darwinism impact imperialism.

What type of sentence has at least one independent and one dependent clause

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.