America should focus on itself and only itself. Let the rest of the world deal with their own issue and America can deal with themselves. We (America) are
better off when we put ourselves first"
Do you agree with this statement? Why or why not?
What's are the pros and con to this thinking if all (if not most) Americans felt this way

Well, I think helping and sharing knowledge is fine. Though, it seems we have alot of troubles here in America that we would need to find a solution for first before going and inviting, fighting, or commencing with other countries. I mean, just look at how many people here in the states have been treated unjustly. I think we need to save ourselves instead of dragging anyone else down with us.

Explanation:

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

d) true or false question