Why did americans want to build a transcontinental railroad? ?

Which factor has played the most important role in changing the way history is studied over time?

Historians believe that animals drawn in cave paintings during the paleolithic era could have represented each of the following except a a. successful hunt b. domesticated pet c. god that was worshipped d. way to obtain an animal's spirit select the best answer from the choices provided

What type of monarch was fredrick the great ?