The region for video types is related to the vertical frequency of your display - determined by the sort of electricity you have there. (It's a halfwave function of your voltage).
It had an important function in the thermionic valve days... Isn't really necessary anymore but regions keep doing it these days because they used to do it earlier.
US runs 60Hz on 120 volts (more like 57.5Hz on 115 volts, but anyway ...) and calls our video display type "NTSC"
Europe, Japan, (etc) run 50Hz on 200volts (or more to the point perhaps -- as much as 62.5Hz on 250 volts) .... and call their display type "PAL".
If there's a large difference between your Hz and the nominal 60Hz of NTSC, then your picture might be 'fuzzy', but still otherwise OK.
Odds are ... that either overvoltage in your region or correction circuits in your television would correct this with no problems.
Region typing is mainly used to keep Video Game Disks from being sold between street-release dates across various countries because the region code of the Console can prevent a game from the 'wrong' region from loading.
On a
MOS dvd it's probably not a big deal, and that seems consistant with DLD's feedback on the matter.
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