Answer and explanation:
The organization of your speech will naturally evolve from your research and will involve little effort on your part. I personally think this is a false statement because even though in order to write a speech on a certain topic, a research must be made, it would not be a speech itself if we just copy paste ideas we see on other sites or books, that'd be plain plagiarism. Through a speech we are supposed to give an open idea about a specific topic and it should be of original words and content.
The works they collected were culturally popular.
most of the works they had depicted revolutions and the history of cities, most of which supported new artists.