The territories that the united states gained from mexico were supposed to be slave states due to the missouri compromise. all north of the 36º 30' line drawn by the missouri compromise. acquired after the missouri compromise, which did not include those territories. supposed to be free states due to the missouri compromise.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.