A functional region might be created by all of the following EXCEPT a public transportation system
the broadcast area of a local television station
the influence of an elected official
suburbs around a city center
the customer base of a particular business

the thirteen colonies are:

connecticut, delaware, georgia, maryland, massachusetts, new jersey, new york, new hampshire, north carolina, pennsylvania, rhode island, south carolina, virginia

they were destroyed coming out of the civil war but after he war they were booming. if you need an in-depth answer follow up with me  

down below

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.