Respuesta :
The correct options are B). Railroads allowing food to be sold farther from where it is grown and D). Manufacturing technologies growing in cities​
What impact did the technology had on great migration?
Technology affected every aspect of migration as it provides access to information about pre-migration, journeys, destination etc.
Technological advancement connected the displaced populations to the information and resources, that gave them a greater capacity to support themselves.
Even, immigrant inventors contributed in the process of technological development through the way of innovation for the long-run economic growth.
Learn more about the Great Migration here:-
https://brainly.com/question/14178058
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