Wales (national flag officially recognized)
Who & why: Wales remains constitutionally part of the United Kingdom throughout this era, but on 23 February 1959 a royal warrant formally recognizes Y Ddraig Goch on a green-and-white field as the official national flag of Wales — the first time Wales has had a legally recognized flag of its own since incorporation into England over four centuries earlier. The Government of Wales Acts (1998, 2006) later establish the Welsh Assembly, renamed the Senedd (Welsh Parliament) in 2020, giving Wales its own devolved legislature for the first time in its history.
What it represents: the red dragon, drawn from centuries of Welsh heraldic and legendary tradition, set on the green-and-white field associated with the House of Tudor (itself of Welsh descent) — a design already in informal use for generations before its 1959 warrant made it official.