Who created the first assembly line used for manufacturing of automobiles?

Why do you think that historians use the word “revolution” to describe important changes in agriculture? how did the green revolution and other agricultural revolutions change the lives of billions of people? < < read less

How many states were there when the constitution was written?

Choose one piece of art shown in the unit and identify three elements or principles of art used in the piece. describe how each of the elements/principles is used in the artwork.