Question

Which are reasons that the United States became a leader of industry after Reconstruction? (Select all that apply.)

growth of factory production
growth of mining expeditions
growth of railroad construction
growth of the automobile industry
growth of oil production

I think the answers are 1, 2 and 3 but I am not sure because it doesn't specifically say in my texts what caused America to become a leader of the industry after the reconstruction

Answer 1

I agree with your answers. Oil production and automobiles came long after Reconstruction.