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Social Studies Chapter 3 Study Guide technology rural urban need want barter producer consumer economy profit supply demand transportation interdependent globalization communication free enterprise system opportunity cost *What might have drawn the first Americans to North America? *Why did many settlers move westward during the early 1900s? *Which 1848 discovery led many people to California? *How did life in the United States change between the 1700s and the late 1800s? *How did people barter to get the things they needed? *What role do producers play in the economy? *Which advancements in technology in the late 1800s are seen in the United States today? *How does a business make a profit? *In a free enterprise economy, a business operates on what system? *What might happen if a business makes more of a product than people want to buy? *How do supply and demand affect the price of goods and services people buy? *How do people in a community contribute to a nation’s economy? *How are the regions of the United States interdependent? *How does transportation help economically interdependent regions? *Give an example of globalization. *What has increased world trade? *In order, how did the United States economy evolve, or change, from a system of barter to a global economy? *Read a road map and map scale.