During the "golden age" of china, leaders thought of themselves as isolated, yet which of the following? able to be self sufficient as a country able to teach other countries economic and political leadership better than any other country on the planet protected by their military

The correct answer is "Better than any other country on the planet". The Chinese empire practiced the Isolationism during different dynasties, particularly during Ming dynasty, with Hongwu Emperor proposing the policy to ban all maritime shipping in 1371. Chinese leaders practiced this policy to avoid enemies to enter to their territory and because they believed they were superior to any other country and China could be self-sufficient.

the process is called revolution because it was a process of great economic-social transformations that began in england in the xviii century.

the industrial mode of production spread throughout much of the northern hemisphere throughout the xix and early xx centuries.

the effect of this revolution was the distance between the countries, with respect to economic and political power.   after all, not all industrialized at the same time, remaining in the condition of suppliers of raw materials and agricultural products to the industrialized countries.

these differences mark to this day the nations of the world that are divided between developed and developing countries. one way to measure whether a country is advanced is to assess how industrialized it is.

i think the answer is b.