Answer to the first question: C
Answer to the second question: Pennsylvania
Answer:
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Explanation:
a) how: america came closer together after an attack on American soil.
b) for what: bc they were attacked by terrorists in there own country. it also killed a lot of people that were serving in the military at the time.
In Dred Scott v. Sandford (argued 1856 -- decided 1857), the Supreme Court ruled that Americans of African descent, whether free or slave, were not American citizens and could not sue in federal court. The Court also ruled that Congress lacked power to ban slavery in the U.S. territories.