In the 1800s, to increase their exports and decrease their imports, the chinese demanded the europeans pay them in

Correct

opium

The Chinese demanded that Europeans pay them with opium to increase their exports and reduce their imports in the 19th century. China imported only 200 chests a year in the early 1700s and increased to 4500 during the 19th century. China has been the largest opium trader and you have a close relationship with opium.

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.