Democratic People's Republic of Korea (North Korea)
Who & why: the Democratic People's Republic of Korea is proclaimed on 9 September 1948 in the Soviet-occupied north, with Kim Il Sung as its founding leader, formalizing the division that followed Japan's 1945 defeat and setting up the hereditary leadership that has continued through his son and grandson since. North Korea invades the south in June 1950, starting the Korean War; Chinese forces intervene on the North's side after UN forces push toward the Chinese border, and the 1953 armistice (never replaced by a formal peace treaty) leaves the peninsula divided near the original 38th parallel. North Korea has remained a single-party state under Kim family leadership continuously since 1948.
What it represents: adopted in 1948, deliberately replacing the traditional Taegukgi with a new design: a red star on white disc for Communism, centered on a broad red band (revolutionary spirit) edged in white (purity) between two blue bands (sovereignty and peace).
Wikipedia's infobox gives the adoption as 8 September 1948. FOTW quotes Crampton (1985) that the flag was created in 1948 (blue-red-blue stripes) and its 1946-1948 page ends the provisional People's Committee flag on 8 September 1948.
- Flag of North Korea — Wikipedia compiled
- North Korea — Flags of the World (CRW Flags) compiled
- North Korea 1946-1948 — Flags of the World (CRW Flags) compiled
Not established: Only the date was compared; the design symbolism (star, disc, stripe meanings) and the swatch colours were not checked against a specification. FOTW's 'North Korea 1948 (dubious)' page describes a different, probably fictional, flag and gives no adoption date.