In 1803, a team of explorers set out to study lands west of the mississippi river. imagine you are taking this same journey today. how might your experience be different from that of those early explorers? how might it be similar? explain your answer in three or four sentences.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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