What is the purpose of the Preamble to the US Constitution? A. tells the purpose of the Constitution and of the government it established

B. explains the purpose for the US Congress and how it divides power

C. tells us how the people have the power

D. explains how the states will have more power than the national government

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The national security act of 1947 reflected:

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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