Hello there.
An early economic system, mercantilism, was founded on what practice?
Trade internationally with both raw materials and manufactured goods, where ever they may be found.
The New Deal programs did not end the Depression. It was the growing storm clouds in Europe, American aid to the Allies, and ultimately, U.S. entry into World War II after the bombing of Pearl Harbor that revitalized the nation's economy.
The reason why surveying a different number of people or different population of people can possibly change the percentages that you calculated is because these surveys are simply "samples" of the general population as a whole, and are not exact in terms of their results given any random sample.
~ Photographs
~ Newspaper articles
~ Journals
~ Personal letters
(I am not sure if Textbooks is one though but I think it is. Sorry if it's wrong)
Hops this helps! ^^
