Which principle keeps one state from denying the validity of a birth certificate that was issued by another state?

In 150 to 200 words, use evidence to compare the ideas of the abolition of the slave trade and the abolition of slavery

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.

Agovernment is a government system where all citizens that choose to vote have a say in their government. question 4 options: communist democratic autocratic theocracy