Where is the knowledge of crop civilization in the america’s believed to have originated

W crop civilization in the America’s believed to have originated in the area of South America and Mexico

It is believed that American knowledge of crop cultivation originated in the area of South America and Mexico in general.

it for the workers lik if you have a job thats what its for

explanation:

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).