The Mongol Empire utilized camel caravans to Carey gods via the blank to western civilizations.

I don’t know what blank you are trying to say, but the Mongolian empire used Mongolian Horses, which are bigger and have a more work pull for pulling tents and other things. They used these because they were ver nomadic people, moving every few days even. Camels were most likely used in the invasions of Northern Africa in the 1200’s, and most likely take back to Asia.

Explanation:

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.