This print only makes use of the "Change Filament" option, no MultiMaterial needed :) As you see, I printed it on Prusa MINI. No supports needed.

It should work for more flags (not only Romanian) (depending on how the colors of the flag are distributed)

For printing the flag shown in the photos, I used:

• Brim (to be sure that it will stay on the bed)
• Prusament PLA filaments (Galaxy Black, Royal Blue, Pineapple Yellow, Lipstick Red)
• 0.20mm layer height
• 4 "color changes"

For printing the Base Support:

• Nothing special, usual settings.

Important:
Do not do my mistake to move/touch the flag while printing because it will immediately catch vibrations and this will be extremely visible at the end. Avoid any vibrations of the printer during printing, especially at higher Z values :)

I attached also the 3mf of the flag which contains the mentioned settings .