This is the 11214th most frequent Russian word.
губернаторов
The word "губернаторов" is the genitive plural form of "губернатор," meaning "governors."
In this sentence, "губернаторов" is in the genitive plural form, showing possession or association with the subject "жизни" ("life") and specifying details about it regarding multiple governors.
Вчера я читал книгу о жизни русских губернаторов.
Yesterday, I read a book about the life of Russian governors.
Here, "губернаторов" is in the genitive plural form, as it indicates the ownership of the "ошибки" ("mistakes") being discussed.
На встрече обсуждали ошибки губернаторов.
At the meeting, they discussed the mistakes of the governors.
In this example, "губернаторов" is in the genitive plural form as part of indicating whom among a group the award pertains to, emphasizing a subgroup of governors.