What are some examples of America's role in the world, began on the periphery and has moved to take a central place.

A clear example of how America's role in the world moved from a peripheral place to a central and defining place is that of World War II.

During this conflict, America began as a neutral country, that although it was ideologically closer to the allied side, it did not want to participate in the contest because it had no interests at stake. This, added to the isolationism prevailing at that time, towards which neither the government nor society wanted to participate in the war.

In this way, America's role in the beginning of the war was almost minuscule, only trading with the allied countries, to which it supplied certain materials.

But everything changed in 1941, when Japan attacked Pearl Harbor and forced the United States to enter the allied side.

Once in battle, America turned out to be the main combatant both on the Pacific and on the western front, with which its entry into the war meant a breaking point in it. The development of events meant that the American forces were the ones to determine the fate of the conflict, tilting the balance towards the side of the allies.

Finally, in 1945, after the fall of Berlin, the United States was the country that ended the war through the nuclear bombing of Japan, thereby demonstrating America's central role in the conflict.

The correct answer to this open question is the following.

Some examples of America's role in the world, that began on the periphery and has moved to take a central place can be the following.

After the American victory over México in the Mexican-American War, the United States increased the size of its territory acquiring California, Utah, New Mexico, and Texas, as part of the Guadalupe-Hidalgo Treaty. From this regional domination, what it really put the US in the international plane of world power was its victory over European superpower Spain, a nation that traditionally was known for its great navy, in the Spanish-American War of 1898.

From that point on, the US increased its presence and power in Latin America and with the Monroe Doctrine, it sent a clear message to European Nations that the US was capable of taking care of the issues on this side of the planet.

At the beginning of World War 1, the United States sold weaponry and supplies to the European countries and lend them money. Later, the US entered the war on April 6, 1917. By the time of the beginning of WW2, the UNs was already a military superpower whose presence in this war was definitive to the allied forces' victory.

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

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