Answer:
A. global trade
Explanation:
Like the modern bubonic plague, scientists believe the Plague of Justinian spread through fleas. Studies indicate the plague may have originated in China or India and was then transported to the fertile valleys of Egypt through trade routes.
The plague is thought to have originated in Asia over 2,000 years ago and was likely spread by trading ships, though recent research has indicated the pathogen responsible for the Black Death may have existed in Europe as early as 3000 B.C.
The primary reason for European colonization of Africa was capitalism. European nations saw an opportunity for new trade routes and potential wealth in some of Africa's natural resources. The geographical limitations of Europe were also a factor.
Yes, just like in every other century since the invention of employment.
