The major challenges to historical research revolve around the problems of sources, knowledge, explanation, objectivity, choice of subject, and the peculiar problems of contemporary history. Sources The problem of sources is a serious challenge to the historian in the task of reconstructing the past.
Answer:working conditions in factory’s
Explanation:
Answer:
They didn't add about world war 2 or pearl harbor
Explanation:
You didn't post a picture or tell us what the choices are
