What effect does Twain achieve with the personification at the beginning of this chapter

In Chapter 19 of Huckleberry Fin, Jim’s reemergence on the raft and the encounter with the duke and the dauphin illustrate the shifting power dynamics between blacks and whites as Huck and Jim move further down the river. Jim’s use of Huck’s whiteness to threaten his fellow black men shows how corrupting racism and the slave system can be.