Original sentence: The development of these rejected or unjuried exhibits was key in the development of the avant-garde in painting, with the SAI being particularly prominent during the Gilded Age, until World War I
Edited sentence: The development of these rejected or unjuried exhibits was key in the development of the avant-garde in painting, particularly the Ecole de Paris (Paris School), with the SAI being particularly prominent during the Gilded Age, until World War I