The Missouri Compromise was a compromise between people that wanted slaves and didn't so that there was supposedly an equal amount of slave states and anti-slave states in the union. Missouri was admitted into the union as a slave state and Maine was admitted into the union as a free state. So, Missouri and Maine.
True because all students and children have a right of education no matter the cost
This case ruled to be unconstitutional for state officials to create school prayer or recitations in public schools because it violated the establishment clause.
Preamble I believe is it looking for a document? If so this should be it :D