it all depends.
Yes, in North Carolina, a person will need a dealers license to sell utility trailers. In order to receive a dealers license, you will need to visit your state's DMV.
probably
If it is under 50cc, has lights and such, and has a seat height of 25", then no. Over 50cc and is must have a title and you have to have a motorcycle license and insurance.
trailer
in mass they are. depends on where you are. in mass they are. depends on where you are.
Yes and also in a trailer in mount airy where andy griffith was set
Any trailer used on the road, including a camper, requires a license.
Yes.
Yes, and I have done exactly that, and in NC, to boot. If you haven't seen it, it's because most companies prefer instead to send another truck to pick up the trailer instead of having the trailer towed, as well as not wanting to pay the additional costs of having the trailer towed with the truck. Restrictions are present, of course. For example, the tow truck driver must have all necessary endorsements. For example, if a vehicle pulling a tanker full of hazardous chemicals had to be towed, that tow truck driver would need a Hazmat endorsement and a tanker endorsement (in NC, the two endorsements together are an "X" endorsement, although some states show separate "H" and "K" endorsements for hazmat and tanker, respectively. Another thing tow truck drivers in NC need to be wary of is low tonnage roads, particularly in the Raleigh-Durham area. The weight limit on these roads is 6-1/2 tons per axle, and the fines for violations of this are very steep.
No, NC does not require a title. Only a bill of sale.
no. you don't need a passport
You will need a lawyer.