What is the significance of bixby mocking the narrator's speech?

During the cold war, which of the following groups of countries would have all been"behind the iron curtain"

Which of the following is an example of an iron triangle?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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