This is the 5529th most frequent Spanish word.
pertenecientes
Belonging.
In this sentence, 'pertenecientes' is used as an adjective describing 'objetos', indicating their belonging or association with the 'cultura azteca'.
En el museo encontramos objetos pertenecientes a la cultura azteca.
In the museum, we found objects belonging to the Aztec culture.
Here, 'pertenecientes' functions as a descriptor for 'documentos', indicating their relevance or association with the 'proyecto'.
Los documentos pertenecientes al proyecto fueron entregados ayer.
The documents pertaining to the project were delivered yesterday.
In this case, 'pertenecientes' describes 'comunidades', specifying their affiliation or relation to 'zonas rurales'.