Answer:
It enabled families to remain in close contact even as they moved across the country and across the world.
Explanation:
Alexander Graham Bell is a well known scientist and engineer, who is widely known for the invention of Telephone.
Telephone is practically used for making calls, whereby a user at one end, can get to listen and hear the other user, at the other end, regardless of the distance and location, in as much the telephone service network is available.
Hennce, it can be concluded that the long-term effects of Alexander Graham Bell’s invention, which is basically Telephone, is: "it enabled families to remain in close contact even as they moved across the country and across the world."
The correct answer to this open question is the following.
Although the question is incomplete because it does not provide a specific reference about the author of the letter or any other reference, we can comment on the following.
A primary source is the piece of information that was written by a character or an individual that lived in the moment of the event, was part of the event, or witnessed the event. This individual could have written a letter, or a document -including a book. Or he/she took a photograph. Or was part of an interview. The secondary source includes information from a third person who was not part of the time or event but has found information through other resources. It is the case of an encyclopedia or researchers/historian books.
Americans feared communism would prevail.
He primarily influenced the declaration of independence. His ideas made the colonists wonder about democracy and question their current government
