I have learned something about adjective phrases and participle phrases.
We can't say:
The window open in the fourth floor is broken.
Because "open in the fourth floor" is not an adjective phrase.
But if we say:
The country developed in 1990s is my hometown
Here it means the country became a developed country or just made some progress?
Because if the participle is the predicative, I'm not sure if it should follow the same rule as the adjective does. "Be developed in 1990s" is not an adjective phrase, right?