. 　　　。　　　　•　 　ﾟ　　。 　　. 　　　.　　　 　　.　　　　　。　　 。　. 　

.　　 。　　　　　 ඞ 。 . 　　 • 　　　　•

　　ﾟ　　 Black was not An Impostor.　 。　.

　　'　　　 1 Impostor remains 　 　　。

　　ﾟ　　　.　　　. ,　　　　.　 .

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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