How did the us become a world power after the industrial revolution?

Which product would have been most likely to have been traded in this area at this time?

In 1870 which path would be the easiest to travel when going from omaha to sacramento a-mormon trail b-transcontinental railroad c-santa fe trail d-california trail

Which of these would be most useful in studying the effect of germs exchanged between the new and old worlds? a. a graph showing the number of europeans between 1492 and 1600. b. a graph showing the number of native americans between 1492 and 1600. c. a primary source description of the symptoms of an unknown disease affecting native americans in 1492. o d. a primary source description of the symptoms of an unknown disease affecting europeans in 1492.