As a result of Stalin's Five Year Plans, the Soviet Union witnessed (1 point)
a growth in industrial production
the rise of a market economy
a partnership with Western economies
the elimination of collective farming

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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