This is the 588th most frequent Azerbaijani word.
göstərdiyi
"Displayed" or "shown."
In this sentence, 'göstərdiyi' refers to 'the efforts he exhibited', illustrating the actions taken by the subject.
Ömrü boyu göstərdiyi səylər nəticə verdi.
The efforts he showed throughout his life paid off.
Here, 'göstərdiyi' qualifies 'loyalty', expressing an attribute displayed by the subject in certain circumstances.
O, bizə dostluqda göstərdiyi sədaqətə görə minnətdarıq.
We are grateful for the loyalty he showed in friendship.
Here, 'göstərdiyi' refers to 'the examples he showed', functioning as a relative clause to describe the examples.