What new technologies were revolutionizing warfare in the 1860s?

What impact did new technologies in the assembly and manufacturing have on the auto industry in the 1920s

Which of these statements describes a long-term impact of european imperialism in africa? a. african countries joined together to present a united front against imperialism. b. europeans paid african countries after colonizing them, offering these new countries a fresh start. c. european powers drew the current borders, splitting ethnic groups among modern countries. d. africans became more loyal to their countries than to their ethnic groups.

Which piece of information would most a historian create an interpretation of this photograph of works in a factory?