Should the th of 20th century be superscripted

Need with this plz someone me aspa really need with this! asap

Answer asap will give brainlestusing two paragraphs consider the autobiography of lincoln in the school that made lincoln president how do these two authors use claims and supporting evidence when describing lincoln's life

What does sterling brown mean when he mentions the chain gang a.) brown is referring to people in general, who are chained in their minds. b.) brown is referring to slaves in chains c.) brown is referring to gangs in the ghetto chained to their crimes and poverty d.) brown is referring to men perhaps prisoners singing/chanting while working.