What was the Justinian & why was it important?

Justinian was an emperor of the Byzantine Empire and under his rule was a time of wealth and prosperity.

Justinian is important because he was the best and most effective Byzantine emperor to this day.

Explanation:

discovery of cape town-portuguese empire

development of africans language-dutch east india company

introduction of railway-british empire

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: