What was the main cause for reducing the legal voting age to 18? a. young american citizens effectively organized and protested for the right to vote. b. government officials hoped it would lead to a decline in disruptive student protests. c. the constitution mandated that the draft age be equivalent to the voting age. d. a decision by the supreme court justices determined that voting requirements based on age were unconstitutional?

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

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.