Who was the first king ever?

Probably Menes, the king of Egypt who united the Upper and Lower Egypt in the 3rd millennium. He seems to be the first Egyptian ruler for whom there are historical records.
Umm you know, you asked Who was the first king? But from which country?Any specific COUNTRY KING, you want to know the name of.

I know a few countries 1st kings.

For England: Egbert Thereby

For Israel: Saul Tālūt‎

For France: Louis XII

For Rome: Romulus

For Prussia: Frederick

HOPE I HELPED!