What innovation made assembly lines more efficient?

A. Satellites

B. Robotics

C. Labor unions

D. Crop rotation

Which of the following show the new economic ideas were growing in the south in the late 1800s

What was one striking development of the golden age of prehistory?

According to the excerpt, what were the causes of world war 1? check all that apply. 1. russia’s mobilization 2. the spread of disease 3. the assassination of the archduke 4. imperialism and expansion 5. the growth of britain’s naval forces