Currently spiraling out of control.
In one day of heavy fighting in the battle of Stalingrad, a railway changed hands from Soviet to German control and back again fourteen times in two hours.
The last civil war widow died in 2003.
The maximum territory of ancient Rome was 2.51 million square miles. Which was the 19th largest empire in history.
Humans appeared 200,000 years ago. Written record began 6,000 years ago. That would mean that 97% of history is lost.