Answer:
Cleveland's motivation in restoring Liliuokalani to her throne:
Cleveland was opposed to America's rising imperialistic ideals and believed that by removing the Queen from her throne, the United States had avoided wrongdoing. He considered it unnecessary and honest of America to act that way.
What motivated the sugar plantation owner to depose Queen Liliuokalani:
Sugar farmers in Hawaii were seeing a drop in profits as a result of the United States' tax on foreign sugars. They knew that if the Queen was deposed and Hawaii was admitted as a state, their profits would skyrocket.