What four elements made possible the second industrial revolution?

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

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

Cuneiform was invented in which religion? mesoamerica egypt indus mesopotamia