Slovak Republic
Who & why: the "Velvet Divorce" — negotiated entirely by parliament, with no referendum in either republic — dissolves Czechoslovakia at midnight on 1 January 1993. Vladimír Mečiar's HZDS had pushed hardest for separation; Slovakia joins NATO in 2004 and the EU the same year, then adopts the euro in 2009.
What it represents: the same white-blue-red tricolor as the 1939 wartime state, adopted again on 1 March 1990 within Czechoslovakia and given the double-cross-on-three-hills arms at the hoist by the constitution of September 1992, with the shield's proportions set by a law of 18 February 1993 — a deliberate reclaiming of a much older national symbol rather than the invention of a new one.
Wikipedia says the flag was adopted on 1 March 1990 as the flag of the Slovak Republic within Czechoslovakia, initially without the arms, that the constitution of 3 September 1992 added the coat of arms on the hoist side, and that a law of February 1993 described the details. FOTW says Slovak legislation of 1 March 1990 laid down the plain tricolour, that the constitution was enacted on 1 September 1992 with the flag in article 9, paragraph 2, that the flag was first hoisted on 3 September 1992 in front of Bratislava Castle, that the arms were added because the plain flag could be mistaken for Russia's, and that a law of 18 February 1993 set the shield's proportions.
- Slovakia — Flags of the World (CRW Flags) compiled
- Flag of Slovakia — Wikipedia compiled
Not established: The sources differ on 1 or 3 September 1992 and on the article number. This page used to say the arms were first codified in 1939.