This product was used to build railroads, buildings, bridges, barbed wire, and skyscrapers ?
lumber
coal
steel
oil

Which of these was an accomplishment of the han dynasty? the invention of the seismograph finding a water passage to europe the invention of the ballpoint pen the invention of the abacus

The diagram shows fossils buried in layers of rock. which conclusion is best supported by the diagram?

You are traveling to japan and need japanese yen how much jpy could you get for $200