"Three Sisters" farming was an agricultural system of companion planting innovated by the Iroquois-speaking peoples of the Northeast; farmers planted corn, beans, and squash together. The beans used the cornstalks as a trellis to grow on, but how did beans benefit the other two plants in the system?

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)