What were Joseph Pulitzer and William Randolph Hearst well known pioneers of? A.
publishing news journals aimed at the upper social classes in America
B.
producing weekly journals focused on world news
C.
engaging in a style of publishing called yellow journalism
D.
working with missionaries to spread Christianity in Africa

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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