What is the voice of verb in An agreement was made by leaders two countries?

The voice of the verb "was made" in the sentence "An agreement was made by leaders of two countries" is passive voice.

Here's why:

* Passive voice focuses on the action being done to the subject (the agreement). The subject ("agreement") is receiving the action ("made").

* Active voice would focus on the doer of the action. It would look like this: "Leaders of two countries made an agreement."

Let me know if you'd like more examples of active and passive voice!