75
Lesson 75 of 84 · Research Skills
Writing a Thesis Statement
Historical maps show how people understood geography, borders, and territories at a specific time. Comparing old and modern maps shows how knowledge changed.
Key Facts
1
Bias can affect any source.
2
Citing sources gives credit.
3
Compare multiple sources for accuracy.
Check Your Understanding
Question 1
1 of 2Which is a secondary source?