Answer:
Virus's,
there would be stealing too
Explanation: The silk road was one of the largest roads built for trading across countries and as they traded the virus's were spreading there was also I really bad type of virus's but I forgot the name. I think you should research about it to get more points and i think this is history related not geography. Enjoy.
Foe me, the most one is my country which is Armenia!
C. ice melting...
hope this helps!!
I believe it's globular and open are the main types.
