do you think that other people came to maryland other than english catholics in the 1630's why did they go there ?

Maryland was home to 451,208 women, 408,820 men, and 55,163 children who were immigrants. The top countries of origin for immigrants were El Salvador (11 percent of immigrants), India (6 percent), China (5 percent), Nigeria (5 percent), and the Philippines (4 percent).

a.

congress passed laws allowing for free passage between states.

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.