How did new technologies impact businesses after the Civil War? -New businesses sprung up to develop the advanced communication devices like the telephone.
-Innovative methods of producing and refining oil made it cheaper and more accessible to consumers.
-Businesses could reach distant customers using new methods of transportation and communication.
-New materials and fuels enabled the mass production of private vehicles which created thousands of jobs.

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what are two things that greatly the american economy after the war? the huge buildup of u.s. military the beginning of the korean conflict the creation of the gi bill the marshall plan for nations

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.