Why is Percy Jackson impertinent?

" This book starts with Percy Jackson, who has lost all his memory because of Hera's attempts to unite Camp Jupiter and Camp Half-blood, has been sent by Lupa – who is the trainer of all the young Roman demigods – to Camp Jupiter.May 19, 2016 " this help ?

Explanation:

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."