what region is best for large scale farming/agriculture. btw this is 13 colonies stuff not present day

The Southern Colonies

Explanation: because they had the best climate and land for farming the climate was worm for most of the year and the soil was very rich.

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.