Answer:
by using scientific methods to date key events
Explanation:
Well, here is a hint. Anything ending in (.com) is not usually trustworthy, because they are usually trying to sell something, or are just not accurate. (.gov) is trust worthy I guess, but they are telling you what you want to hear. (WIKI IS NOT TRUSTWORTHY AT ALL) (.edu) would be the best, or (.org)
Answer:Hitler reoccupies the Rhineland, violating the Treaty of Versailles. Nazi leader Adolf Hitler violates the Treaty of Versailles and the Locarno Pact by sending German military forces into the Rhineland, a demilitarized zone along the Rhine River in western Germany.
Explanation: i hope this helps!
