What was the south's
Economy after and before the civil war

There was great wealth in the South, but it was primarily tied up in the slave economy. In 1860, the economic value of slaves in the United States exceeded the invested value of all of the nation's railroads, factories, and banks combined. On the eve of the Civil War, cotton prices were at an all-time high

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i know social security wasn't one.

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hope my answer has you!

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.