Why did Lee take the war into Maryland? to follow Grant's army
to gain support for the war in this slave state
to attack Washington
to teach the people a lesson for not seceding

To attack Washington

Explanation:

Because Lee's general strategy for the war was to take the capital and force a peace, and the other answers don't make sense

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.