Gone were the days when medieval townspeople's societal rank was determine by birth and ownership of land. In the days of trade, a Townsperson's rank was determined by money and goods. No longer was the royal family the top of the social scale. The kings and queens of trade, merchants and banking families, contributed to the rise of towns, the decline of serfdom, and the beginning of modern society. Write a sentence explaining how the Townspeople's social status was determined during the days of trade.

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.