Historians are concerned with accuracy of their writings and readings but are also aware of

Historians generally are, or should be, also concerned with accuracy of their writings and reading and if there's any bias in the story.History is the story of the interaction between  cultures, people, environment, civilization and ideas. So there's always something to be worried about when it comes to accuracy and viewpoint of a historical event.

b. germany and italy

answer; the period of time known as the middle ages;