This template uses the Property:Definite article to add "the" to those place names that require it in some contexts, e.g. after a preposition.
For example,
- {{Place name with optional article|United Kingdom}} returns "the United Kingdom".
- {{Place name with optional article|Australia}} returns "Australia".
If the first word of the parameter is "The", it is converted to "the", to handle cases like The Bahamas.