(lc)which industry did not exist in the united states until the second industrial revolution? steel railroad shipping mining

Sea exploration became important during the late middle ages because europeans most likely wanted to

Which of the following could affect the human population? a hurricane makes landfall on an uninhabited island. a deadly virus emerges that can pass from human to human. a civil war breaks out in italy. a solar eclipse occurs.

Which two important economic activities in the west are possible because of the united states natural resources