Why do you think the discovery of gunpowder did not occur earlier in history?

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

Before world war 1 started, austria-hungry was wary of (spain or serbia) because of border disputes

Which physical feature minimizes population density in northern africa?