Subject pronouns are used to replace nouns that are performing the action in a sentence. For example:
* She went to the store.
* They are playing in the park.
Since France doesn't perform actions, it doesn't have a subject pronoun.
If you want to refer to France in a sentence, you would use the pronoun "it" or the noun "France" itself.
* It is a beautiful country.
* France is known for its wine.