Yes. It must be locked away, unloaded, and kept separate from the ammo.
Yes, but it must be unloaded during transport.
Obviously you can, since otherwise no one could have a shotgun. The legal way to transport one may vary from state to state.
Trucks, trains, and airplanes are used to transport goods to Illinois.
Shotgun Love - 2004 was released on: USA: 12 November 2004 (Chicago, Illinois) (premiere)
In checked baggage if you follow all the rules.
Yes, but outside the Chicago City Limits.
The NRA has a website that can answer your question.
Illinois River
18 inches, just like it is for the whole of the United States.
It would depend greatly on your method of transport
The Illinois and Michigan canal connected Lake Michigan to the Mississippi River. It was used to transport grain, lumber, and stone.
You can and should avoid Illinois by going through Arkansas through Tennessee through Kentucky through Indiana or Ohio to Michigan.