the prohibition
The U.S.
There were railroads connecting major European cities when World War II began. There were also telegraph wires in Europe at that time.
Germany invaded Poland
German forces invaded Poland which incited World War 2.
Gunpowder was invented in china around 800ad and leaked out at 1200 ad to europe
The Battle of Bulge
Fencing is a major event in the summer Olympics as well as the world fencing championship.
The Black Death
The assassination of Archduke Ferdinand was a major event that led to WW1
D-Day : Operation Overlord - the Allied invasion of Nazi held Europe .
The Yalta Conference in February 1945 was the meeting to discuss the post World War II reorganization of Europe.
World War Two.
World War 2 was a pretty major event.
Vietnam war
guns
the prohibition