Yes, It is not region locked
The region is locked on the Xbox, not game.
A one code DVD is region locked and cannot be played outside of whatever region it has been locked in. A multi region DVD is not region locked and can be used anywhere.
IF you mean it's been encoded for a specific region - you cant - you need to play it back on a multi-region player.
The PSP is region locked only for UMD movies being played on the machine. all games are region free and will work from anywhere in the world
Yes
Yes.
Yes, the Nintendo Switch will not be region locked
No, all 3DS consoles are region locked.
yes.
Only UMD movies are region locked. UMD games are not region locked, so that would work fine.
The U.S have region locked games, the same with Asia.