What y'all think of thisn one

What images are featured on the retangular panels along the sides the image above

In 1907, the retrospective on the work of 19th century post-impressionist georges seurat influenced the development of cubism in a radical way through his painting titled, “sunday afternoon on the island of la grande jatte.” ? ?

Alex thinking about repleacing the word feared at the end of paraghaph 2 with dreaded. why do you think he want to make that change