Why else was it significant that the ideas in the declaration of independence created a new national identity?

The north had all of the following advantages over the south, excepta expansive industry to maintain their economyb. a large number of educated professional officers and soldiersc. a strong central governmentd. control over the major trade routes select the best answer from the choices provided

Why was frederick douglass encouraged by the dred scott decision?

According to justice brown's opinion, social equality must be the result of what three factors?