3) mounds containing the remains of cities
4) bits of pottery and clay
5) ancient writing
That no one country could have a sphere of influence to trade in China- so the U.S. would have equal access to trade.
The Columbian Exchange lead to an increase in the demand for skilled labor in Europe, because D) an abundance of raw materials from the new world needed to be made into finished goods. Many raw materials and new products were brought over to Europe from the Americas which needed to be made into finished products.
