Examples of primary sources include manuscripts, newspapers, speeches, cartoons, photographs, video, and artifacts. ... Secondary sources often use generalizations, analysis, interpretation, and synthesis of primary sources. Examples of secondary sources include textbooks, articles, and reference books.
Because they wrote exposes of unfavorable conditions in the cities and industry, which led to Progressive Era reforms.
Yes. They are complex civilizations/
Answer:
It's economy droped.
Explanation:
During WWII a lot of money went for weapons, and by the end of it and we entered the Great Depression cause of it.