Take a look at this quote from Johnson’s pardon.
What was the only condition for Southerners to meet in order to receive a pardon?

White Southerners must have participated directly in the war.

White Southerners must sign the Emancipation Proclamation.

White Southerners must promise not to practice slavery anymore.

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.