Historical clue formulations

• Home to Mayan ruins like Caracol and Lamanai — 2021-11-12
• Its capital is Belmopan — 2019-10-01
• Locale of some Mayan ruins — 2012-08-23
• Commonwealth country in Central America — 2009-02-04
• It's south of the Yucatán — 2004-04-24
• British Honduras, now — 2002-11-12