Answer:
Examples of a secondary source are: Publications such as textbooks, magazine articles, book reviews, commentaries, encyclopedias, almanacs.
Both of these leaders had fairly effective strategies when it came to alleviating some of the racial woes during this time. DuBois, however, took a slightly different path in that he emphasized education of blacks as being the most important factor in their advancement.
I don't know all of the answers but here are the ones I do know:
5. 5,000 men were sent to the west
8. Every man from Ai was killed. The king of Ai was brought to Joshua alive but was hung and killed later.
9. Mount Ebal
10. A copy of the law of Moses
11. He read to the people the word of the law.
I really hope that this helps!!