Answer: A. Several publications in the mid 1800s made the cruelties of slavery public in the north.
The Missouri Compromise of 1820, which allowed Missouri to become a slave state, further increased anti-slave sentiment in the Northern states. The abolitionist movement began as a more organized, radical and immediate attempt to end slavery than earlier movements.
If affected American Trade in the west because it prevented the travel through Louisiana, which resulted in less trade, thus an economic defect.
A is on edge. And that statement is true
The Magna Carta reduced the power of the king because it gave rights to nobles and barons. They were guaranteed trial by jury and taxation was regulated to avoid the king exploiting them and taking more than what is due. This meant that the King could no longer do as he wished.