Following world war ii, the united states opposed the economic system of the soviet union and its allies because this kir
economy
o
focused too much on military production
was too close to a free market system.
did not allow people to make free choices.
stopped trade between the us and other nations

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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