Inside the red lines is where the hebrew people's origin is at.
The Emperor Wu also established a government monopoly in the trade in grain.
Good climate and ample food supply
The environment of the west coast was attractive for settlement because it had great weather and plentiful natural resources. The climate of the west coast was mild and it had dependable food that attracted the Native Americans
It would make the group feel more connected to it's roots and they would strive for excellence together.