Most cultures had written tablets, writings, papers, etc that had dates and those were kept somewhere safe so we have it now and authors write them in textbooks that historians read
Answer:
The Roman Empire in the east transformed into the Byzantine Empire over time, so it's pretty hard to neatly separate the histories of the two empires, but most scholars agree that Emperor Constantine's reign was the start of the Byzantine Empire.
Explanation:
Answer: B
Explanation:
Since the Treaty Of Versailles was effective in 1920, this helped cause resentment among the German population, leading to the rise of the NSDAP party, with Adolf Hitler as the leader of it. This peaked in 1933, with Hitler taking control of Germany, becoming Chancellor of it, and allowing himself to be a dictator.
Try the 3rd one Mikhail Gorbachev