Why did colonist from Pennsylvania increase their interactions with Indians in the mid-1700s

The middle east is the best association with which international traded product

Answer the questions in the image for zoom in to read : )

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)