Answer:
The Mongols increased communication throughout Eurasia by developing
this pony express-like system of weigh stations with horses and riders that
could quickly relay information. It was called the yam system and also
included these amazing bronze passports, which facilitated travel. Another thing that travelled along the Mongol trade routes was cuisine.
<u>According to the source of Natural History which I paraphrased:</u>
"The Mongols had developed a composite bow made out of sinew and horn and were skilled at shooting it while riding, which gave them the upper hand against ordinary foot soldiers. A wood-and-leather saddle, which was rubbed with sheep’s fat to prevent cracking and shrinkage, allowed the horses to bear the weight of their riders for long periods and also permitted the riders to retain a firm seat. Finally, a sturdy stirrup enabled horsemen to be steadier and thus more accurate in shooting when mounted. A Chinese chronicler recognized the horse’s value to the Mongols, observing that by nature they are good at riding and shooting."
Answer:
Edict of Milan and acceptance of Christianity by Emperor Constantine the Great.
Explanation:
Edict of Milan is the condition which opened the way for Christianity throughout the empire while the empire declined. Edict of Milan is a proclamation issued by Emperor Constantine the Great in 313 AD. In this proclamation, permanent religious toleration for Christianity occur within the Roman Empire and after 10 years, it becomes the official language of Roman empire.
I believe the answer to this is C.
Many European empires arose in the wake of the "Age of Exploration," since this was an age of sea travel in which many European nations were able to colonize land in the New World.