Answer:
The basic assumption for "Early Americans" or at least "Early United Statians", is that, quite frankly, their ancestors came from Great Britain, whether they were fleeing religious persecution, or that they were inmates that were sent west to help relieve overflowing prison system, or even prospectors and adventure seekers. They would establish settlements such as Roanoke and Jamestowns, and with new incomers as well as a growing population, would slowly expand. Remember, these settlers were primarily from England, meaning that English would be their primary language. As such, any works they would read would be in English, and that left mainly works produced in America by British colonists, or else it would simply come from England. Unless they understood a different language, those would be the two places of origin for the information and reading materials that they would acquire.
