a lot is going to change like for example From the Civil War to the end of the century lumbering and flour and grist milling were the leading industries, except that cottonseed crushing supplanted flour and grist milling in second rank, according to the census of 1900. i think this because there was a lot that off things they didn't have before that they have now.
Well I think 1. cause I know Christopher Columbus went on a expedition to go to Asia but found the anericas
It did not effect that as much although they did say to new people that came in to give them their on space or land and their own rules
histology is what you call the history of writing about history