During the first two years of the american civil war, the war in the east was marked by a) the union siege of richmond. b) the collapse of the confederacy. c) decisive victories for the union. d) significant confederate victories.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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