It was not until 3170 b.c. that King Narmer of Upper Egypt conquered Lower Egypt.
King Narmer's forces numbered in the tens of thousands, handing them an easy victory over Lower Egypt. 
mnli hypothesis: King Narmer's forces numbered in the tens of thousands, handing them an easy victory over Lower Egypt.  premise: It was not until 3170 b.c. that King Narmer of Upper Egypt conquered Lower Egypt.