12. Which statement about states' rights is true?
A. Jackson's successful defense of federal power settled the issue of states' rights permanently.
B. Americans would continue to debate the balance between states' rights and federal powers until the Civil War broke out in 186
C. Andrew Jackson was a strong supporter of the principle of states' rights.
D. Politicians in the 1800s agreed that the power of the federal government derives directly from the states.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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.