What is the necessary and proper clause? Why does the Constitution have a necessary and proper clause?

What was the importance of the sepoy mutiny?

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.

The conclusions presented in this article are based primarily on