To cut ties with the Native American culture and adapt to the American culture.
It would be a or d because it was during in the byzantine time
Some of the pull factor codes were things like the Homestead acts which were a series of acts on land allocation. For example, if you went westwards, the country would give you a huge piece of land which would become fully yours after five years of successful agricultural business.
The Enlightenment was a European age of reason, where politics, philosophy, and science radically changed. During this period, Europe questioned authority and embraced individual thought and humanity. This period produced a plethora of books, essays, inventions, laws, scientific findings, and revolutions, such as the American and French Revolutions, which were influenced heavily by the Enlightenment period.