How were brezhnev and stalin similar?

a)they developed a cult of personality.
b)they increased censorship of arts and literature.
c)they used troops to put down a rebellion.
d)they imprisoned individuals who spoke against them.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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