All states must conform with Federal statutes. A shotgun cannot have a barrel shorter than 18 inches, or an overall length shorter than 26 inches.
18 inches, just like it is for the whole of the United States.
That would depend on the make and model of the shotgun in question,and the length of the barrel/barrels that came with the shotgun.
From the breech.
From the breech
A little over 36"
Any shotgun with a barrel length of less than 18 inches and/or an overall length of less than 26 inches.
A good, leagal, site would be www.hulu.com . They have quite a few full length movies you can watch, and also a lot of full length TV programs.
A shotgun is a shotgun, regardless of what you do to it (except should its length go below certain limits, it will be reclassified as a pistol or handgun in some jurisdictions). If you saw some of it off, then it becomes a "sawn-off shotgun", pending the above restriction on length.
18.5 inches
18"
From the muzzle to the end of the buttstock.
According to federal law the shortest barrel length allowed for both rifle or shotgun is 16 inches.