When America began as a nation of thirteen states, the "frontier" was the land between the states and what other boundary?
California
Canada
Atlantic Ocean
Mississippi River
Pacific Ocean
Florida

Which of the following encouraged westward expansion? a.the government decreased the price of federal land. b.each of these represents actions taken to encourage westward expansion. c.the government decreased the price of federal land d.the second national bank lowered the cost of borrowing money (reduced interest rates)