Now imagine you are 12-years-old and you live in western europe in the year 600 a. d. think about your life during this time and answer these questions: what is your life like? what does your family do? do you feel safe? who will protect you in case of danger? what does your future look like? will you go to school?

the british won and the germans couldn't invade great brit

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: