American Century facts for kids

For other uses, see American Century (disambiguation).

The American Century describes a time, mostly since the middle of the 20th century, when the United States became very powerful. This influence was seen in politics, economics, technology, and culture around the world. It's a bit like how Britain's Imperial Century described Britain's strong influence from 1815 to 1914.

The United States' power grew throughout the 1900s. It became especially strong after World War II. At that time, only two major world powers, called superpowers, remained: the United States and the Soviet Union. After the dissolution of the Soviet Union in 1991, the United States was left as the world's only superpower. This meant it became the leading nation, sometimes called a "hyperpower."

Understanding the American Century
- How the Idea Started
The United States on the World Stage
What is Pax Americana?
The American Century After 1945
See also

Understanding the American Century

How the Idea Started

The phrase "American Century" was first used by Henry Luce. He was the publisher of Time magazine. In 1941, Luce wrote an article in Life magazine. He believed the United States should play a big role in the world during the 20th century.

Luce encouraged the U.S. to stop being isolated from world events. He wanted the country to help spread democracy and good values globally. He even urged the U.S. to join World War II to protect these democratic ideas. Luce believed that under American leadership, the world could become a better place for everyone. He saw the U.S. as a global leader, not just a country with its own territory.

The United States on the World Stage

Early Global Steps (Late 1800s - Early 1900s)

Map of the United States and directly controlled territories at its greatest extent from 1898 to 1902, after the Spanish–American War

Post–Spanish–American War map of "Greater America"

Towards the end of the 19th century, the United States started to look beyond its own borders. After the Spanish–American War in 1898 and the Boxer Rebellion in China, the U.S. began to play a bigger role globally. The government started protecting its own industries and built a strong navy, known as the "Great White Fleet."

When Theodore Roosevelt became president in 1901, he pushed for more international involvement. This was a change from the country's earlier policy of staying out of other nations' affairs. For example, the U.S. fought the Philippine–American War to secure its control over the Philippines. In 1904, Roosevelt also started building the Panama Canal, which made shipping much easier. He also declared that the U.S. had the right to step in if there were problems in other countries in the Americas. This showed the U.S. was becoming a major power in its region.

World War I and Its Aftermath

When World War I began in 1914, the United States tried to stay neutral. It avoided fighting while trying to help make peace. However, President Woodrow Wilson later felt the war was too important for the U.S. not to be involved in the peace talks. The U.S. joined the war in 1917 as an "Associated Power" with the Allies.

At first, the U.S. had a small army. But after a new law, 2.8 million men were drafted to serve. By 1918, thousands of American soldiers were arriving in France daily. The war ended in 1919 with the Treaty of Versailles. After the war, the U.S. decided to return to its policy of isolationism. It did not approve the Versailles Treaty or join the League of Nations, an international organization created to prevent future wars.

Leading Up to World War II

By 1916, the U.S. economy had become the largest in the world. Between the two World Wars, the U.S. focused on protecting its own economy. A law called the Smoot–Hawley Tariff Act made it harder for other countries to sell goods in the U.S. Many experts believe this law made the Great Depression worse and spread it globally. Later, the U.S. started to make trade easier with other countries.

When World War II started in 1939, the U.S. slowly became less neutral. However, many Americans still did not want to join the war in Europe. In 1940, the U.S. military was not among the strongest in the world. Even though U.S. ships were fighting at sea, Congress had not officially declared war. Groups like the America First Committee strongly opposed American involvement in the European conflict. Still, the U.S. provided military aid to the United Kingdom and the Soviet Union through a program called Lend-Lease.

In 1941, President Franklin D. Roosevelt gave his famous Four Freedoms speech. He explained that the U.S. had a role in helping its allies already fighting. Later that year, President Roosevelt and British Prime Minister Winston Churchill created the Atlantic Charter. This document outlined their goals for the world after the war. In December 1941, Japan attacked American and British territories, including the U.S. fleet at Pearl Harbor. These attacks led the United States and the United Kingdom to declare war on Japan. Soon after, Germany and Italy declared war on the U.S., and the U.S. declared war back.

After World War II: A New Era

During World War II, the main Allied powers—the United States, United Kingdom, Soviet Union, and China—met to plan for the post-war world. To help keep peace, these Allies formed the United Nations in 1945. In 1948, the UN adopted the Universal Declaration of Human Rights, which set common standards for all member countries. The United States also worked closely with the United Kingdom to create important organizations like the IMF, World Bank, and NATO.

What is Pax Americana?

Pax Americana is a term that means "American Peace." It describes a period of relative peace in the Western world. This peace largely came about because of the strong influence and power of the United States. This era began around the middle of the 20th century, especially after World War II ended in 1945.

The American Century After 1945

The "American Century" continued through the Cold War. During this time, the United States was one of the world's two superpowers. After the Cold War ended, many believed the U.S. was the only true superpower left. The U.S. is the fourth-largest country in the world by area. In 1990, its population was about 248.7 million, making it the fourth-largest nation at that time.

Political Influence Around the Globe

In the mid-to-late 20th century, the U.S. was a strong capitalist country with a democratic government. It holds a permanent seat on the United Nations Security Council. Its close allies, the United Kingdom and France, also have permanent seats. The U.S. built strong relationships with capitalist countries in Western Europe, Latin America, the British Commonwealth, and East Asia (like South Korea, Taiwan, and Japan). It formed alliances with both democratic nations and some right-wing governments.

Economic Power and the Dollar

The American Century also included the strong economic influence of the United States. Many countries around the world adopted economic ideas promoted by the U.S. The U.S. had the largest economy in the world by the end of the century. It had vast natural resources, a modern farming industry, and a large industrial base.

The United States dollar became the main currency used for international trade and reserves under the Bretton Woods system. U.S. economic ideas were based on capitalism, where production is guided by what customers want. The U.S. was allied with the G7 group of major economies. Its economic advice was often given to developing countries facing crises by international groups like the International Monetary Fund (IMF) and World Bank.

Military Strength and Global Presence

Countries with United States military bases, as of 2023

The military of the United States was very advanced and had the highest military spending in the world. The United States Navy was the largest globally, with the most aircraft carriers. The U.S. had military bases all over the world. During the first part of the Cold War, it had the largest nuclear arsenal. It also had one of the largest armies and air forces. Its strong military allies in Western Europe, part of NATO, also had their own nuclear weapons. The U.S. also had a powerful global intelligence network through the Central Intelligence Agency.

Cultural Impact Worldwide

The cultural influence of the U.S. is often called Americanization. This can be seen in how U.S. music, TV shows, films, art, and fashion spread to other countries. People around the world also admired the freedom of speech and other rights enjoyed by Americans. American pop stars like Elvis Presley, Michael Jackson, and Madonna became famous globally.