There are 8 million negroes who you know. they have plowed your fields. they have cut down your trees in your forests. they have built your railroads and cities. they have worked hard in your mines. they the south get stronger after the war. what is the speaker's main purpose for saying this? group of answer choices to black americans get work in the south to give new ideas about skills that black americans can learn to tell black americans to look for work wherever they can find it to show all people in the south the best way to live together