Identify the type of sentence: i don’t understand why there is a fee.

exclamatory

declarative

interrogative

imperative

It is a Declarative Sentence. Option B is the correct answer.

A declarative sentence is a sentence that just as its name suggests, declares or states any thing, and ends with a period.

In this sentence the person is stating that he doesn't understand why there is a fee. In this sentence, he is declaring something. He is stating that he is unaware of something. He is telling this by a statement, that I don't understand why there is a fee. So this is truly a Declarative Sentence

the exodus of these people from constantinople contributed to the revival of greek and roman studies, which led to the development of the renaissance in humanism and science. byzantine emigrants also brought to western europe the better preserved and accumulated knowledge of their own greek civilization