Lost Technology Global Steam

War...
No one knows when or how it started.
In the lands controlled by humans, one fights in the name of peace and justice, one battles for no reason other than to fight, one battles out of greed, to gain more land, and like this, they all faded in the fighting.
The victor edits history to put them in a favorable light, and removes anything that they deem unflattering...
As a result, humanity has lost many things to the wars.
Territory, technology, and their true history...
Now there's not a single country that’s lasted more than 50 years...