How and why did the united states take a more active role in world affairs? give examples of how the united states became more active.

For many, the US's involvement in World affairs really shifted with World War II.

As America left World War II as one of two major superpowers (US & Soviet Union), it then became a race for strategic advantage in the world.

So, the United States got more involved in keeping the Soviet Union and it's representatives from spreading.

This led to incursions in Korea, Vietnam, and throughout Central America as part of the "Cold War"

on this day in 1913, henry ford installs the first moving assembly line for the mass production of an entire automobile. his innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

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