Which of the following statements does not require a source citation?
a ulysses s. grant's father ran a tannery shop in point pleasant, ohio.
b george washington was the first president of the united states.
c lincoln's intent was clearly to end the practice of slavery.
d a great patriot once said: "give me liberty or give me death."
i think it is b? ?

B George Washington was the first president of the United States.

Explanation:

The above statement falls into the category of common knowledge.

This type of knowledge do not need citations. This is because:

Someone does not need to cite a source to prove that George Washington was the first president of the United States.

It is common knowledge and almost everyone knows it.

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.

i would say b. research typically uses a variety of sources