HOW DID THE U.S BECOME A SUPERPOWER ,DOMINATING AND EXTENDING ITS INFLUENCE OVER THE ENTIRE WORLD??
Answers
By 1890, the United States had by far the world's most productive economy. American industry produced twice as much as its closest competitor--Britain. But the United States was not a great military or diplomatic power. ... From the Civil War until the 1890s, most Americans had little interest in territorial expansion.
Because World War II devastated Europe and Asia
It is impossible to fully capture the toll of the second world war in any one metric, but this map of military deaths can serve as a telling shorthand. While the war was terribly costly for all involved, the human cost was disproportionately felt by the two primary Axis powers — Germany and Japan — and particularly by the Soviets and Chinese, as well as by other countries in Eastern Europe and East Asia caught in the war machines. These military deaths merely hint at the much larger death toll in both continents from war, famine, and genocide, as well as economic and ecological devastation. While Americans paid dearly, as well — enduring the deaths of 400,000 military personnel — the US came out of the war far more powerful by virtue of everyone else's decline.
By dividing up the world in the Cold War
After the world wars and the end of colonialism, the global system went from many competing powers to exactly two: the US and the Soviet Union. Both had competing ideologies, competing interests in Europe and Asia, and deep mutual distrust. While that might have normally led to war, the horrifying power of nuclear weapons kept them from fighting outright. Instead, the US and Soviet Union competed for global influence.
American and Soviet fears of a global struggle became a self-fulfilling prophecy: both launched coups, supported rebellions, backed dictators, and participated in proxy wars in nearly every corner of the world. Both built up systems of alliances, offshore bases, and powerful militaries that allowed each to project power across the globe.
By 1971, the US and the Soviet Union had settled into a stalemate; this map shows the world as it had been utterly divided. In 1979, the Soviets invaded Afghanistan; a year later, Ronald Reagan ran for president, promising to end the détente and defeat the Soviet Union. The Soviet Union, along with many of its trappings of global power, disintegrated — leaving the United States with a vast global architecture of military and diplomatic power that was suddenly unchallenged.