This is the 9872nd most frequent Russian word.
агентствам
"To agencies" (dative plural of "агентство").
The word "агентствам" is in the dative plural form, used to indicate the indirect object of the action, which is to whom the request is sent.
Мы отправили запрос агентствам сотрудничества.
We sent a request to the cooperation agencies.
Here, "агентствам" is again in the dative plural form, showing the recipient of the information.
Они предоставили агентствам необходимую информацию.
They provided the agencies with the necessary information.
In this sentence, "агентствам" remains in the dative plural, signifying the entities to which the documents were delivered.