Biblical commentators believe the Books of Kings was written to provide a theological explanation for the destruction of the Kingdom of Judah by Babylon in c. 586 BCE and to provide a foundation for a return from Babylonian exile.
B Ireland.
During this period the United States saw a mass migration towards them from Ireland. This was mainly due to the potato famine. The potato famine caused a big percentage of the Irish population to die, and most of the population to be on the verge of existence because of lack of food. This resulted in mass migration out of the country in search for better life and of course for a place where there always be a food on the table.