What challenge did early farmers not face as a result of the change from a nomadic lifestyle to an agricultural lifestyle?

Perhaps that greatest challenge faced by early farmers in this way was that agriculture depended heavily on soil and weather, which could fluctuate frequently and decrease crop yields. 

Stephen a. douglass coined it

On april 20, 1814, the dethroned emperor left france for the isle of  elba, where he was exiled under the terms of the treaty of fontainebleau.napoleon  would be allowed to ruleelba, which had 12,000 inhabitants. perhaps cruelly, the treaty allowed him to retain the title "emperor."