During which period did King Menes unite the kingdoms and become the first king of the first dynasty of Egypt?

According to the chronology of Manetho (3rd century BCE), the first king of Egypt was Menes, a king of Upper Egypt possibly from the city of Thinis (or Hierkanopolis), who overcame the other city states around him and then went on to conquer Lower Egypt.

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.