What role did muckrakers, like Upton Sinclair and Ida Tarbell, play in stimulating reforms in American society?

How did the grooms national product (gnp) of the united states change between 1940 and 1944

Why did the british government relax rules regulate trade for the american colonies in the late 1600s?

What is one important quote from each of the following philosophers and what do they each mean? thomas hobbes, john locke, and baron de montesquieu