Comparison can be very difficult if you are using: 1.data 2.questions 3.broken pieces btw.(this is a question about fossils )

sectionalism continues to divide the nation as the question of slavery being allowed in the mexican cession became a problem. -the results of the mexican war spark secession in the south because the north did not want to allow slavery in the territories won.

answer; i believe the best and correct answer is stronger bonds between the nations of africa;