Scholars writing about historical events, people, objects, or ideas produce secondary sources because they help explain new or different positions and ideas about primary sources. These secondary sources generally scholarly books, including textbooks, articles, encyclopedias, and anthologies.
Secondary sources are how the news travels. Magazines, News, anything of that sort. Primary sources are the people that had experienced the specific event but secondary sources are the different sources that carried that information such as a newspaper or a magazine.
Because countries who practiced Christianity were traveling the world colonizing different areas and passing on their religion. Remember the 3 G's: God, Gold, and Glory.
