Why do you think such a law exists in the first place?

Explanation:

Laws were first created in 22nd century, these were created to make a ruler in place or someone who would speak for that Nation or country, this ensured a civilized society and prevented the abuse of anothers freedoms, Laws also limited what the ruler/government and society could do they did not have complete power over another.  

these conditions long with a short growing season made farming difficult.

explanation:

the north has a climate of warm summers and snowy cold winters. the terrain is rocky, hilly, and not good for farming.