The United States is a large country in North America, made up of fifty states spread across the continent and beyond, from the Atlantic to the Pacific and out to Alaska and Hawaii. The third largest country by both area and population, it is the world's largest economy and a dominant force in science, technology, business, and culture. A nation built largely by immigration, it is among the most diverse societies on Earth.
The American story runs from thousands of years of Native civilisation through colonisation, revolution, civil war, and a rise to global power within a few generations of nationhood.
For thousands of years before Europeans arrived, the land was home to hundreds of Native American nations, from the cliff-dwelling Puebloan peoples of the southwest to the great confederacies of the eastern woodlands and the plains. European colonisation began in the sixteenth century, as Spanish, French, English, and Dutch settlers established footholds, bringing trade, conquest, and devastating epidemics that swept through Indigenous populations.
Thirteen British colonies on the eastern seaboard, chafing at taxation without representation, declared independence in 1776 and won it through a long revolutionary war. The new nation framed a written constitution that divided power among three branches of government and pioneered modern democratic self-rule, a model that would influence constitutions around the world.
Through the nineteenth century the young republic spread westward across the continent by purchase, war, and treaty, a movement that displaced and dispossessed Native peoples. The contradiction between a nation founded on liberty and the reality of slavery finally erupted in the Civil War of 1861 to 1865, the bloodiest in American history, which preserved the union and ended slavery.
Industrialisation and waves of immigration made the United States an economic giant by the early twentieth century. Its decisive role in both world wars, and its development of the atomic bomb, propelled it to superpower status, locked for decades in the Cold War rivalry with the Soviet Union that shaped global politics until 1991.
The United States spans an enormous variety of landscapes: the forested Appalachian Mountains and Atlantic coast in the east, the vast grassy plains of the interior, the high Rocky Mountains and deserts of the west, and a long Pacific coast. It contains environments from Arctic tundra in Alaska to tropical Hawaii, along with the Grand Canyon, the Mississippi River system, and the Great Lakes, the largest group of freshwater lakes in the world.
The United States is a federal constitutional republic, dividing power between a national government and fifty states, and among three branches: a president, a two-chamber Congress, and the courts, each checking the others. Its written constitution, the oldest still in force, has anchored a stable democracy for more than two centuries. National politics is dominated by two parties, the Democrats and the Republicans, and the country's global military and diplomatic weight makes its elections matters of worldwide consequence.
The United States has the largest economy in the world, diverse, innovative, and powered by finance, technology, energy, and services. It is home to many of the world's most valuable companies and to global hubs such as Wall Street in New York and Silicon Valley in California, and the US dollar serves as the world's principal reserve currency. Its culture of entrepreneurship and research has driven wave after wave of technological change, even as inequality and the cost of healthcare and housing remain central concerns.
The flag of the United States, often called the Stars and Stripes, has thirteen alternating red and white stripes for the original thirteen colonies, and a blue field bearing fifty white stars, one for each state. As new states joined the union, stars were added, so the flag itself records the country's growth from thirteen colonies to a continental nation. It is among the most widely recognised flags in the world.
The United States was founded on the principle of religious freedom, with no official state church, and that openness drew people of many faiths. Christianity in a vast array of denominations is the majority religion, and the country has long been notably more religious than other wealthy nations, though the share reporting no religion has grown sharply. Judaism, Islam, Hinduism, Buddhism, and many other traditions are all well established.
American food is a melting pot, shaped by Native ingredients, waves of immigration, and regional invention. Dishes like the hamburger, hot dog, and barbecue are national icons, alongside deep regional traditions: Southern soul food, Tex-Mex along the border, Cajun cooking in Louisiana, and the seafood of the coasts. The country also gave the world its modern fast-food culture, while its cities offer cuisines from every corner of the globe.
The United States is one of the world's agricultural giants and a leading food exporter. Its fertile heartland, the Midwest, forms a vast belt of corn and soybeans, while the Great Plains grow wheat and raise cattle, and California produces an extraordinary range of fruits, vegetables, and nuts. Highly mechanised and technologically advanced, American agribusiness feeds much of the world, though it raises ongoing debates about scale, sustainability, and the family farm.
American culture reaches the entire globe, from Hollywood films and television to jazz, blues, rock, and hip-hop, and the digital platforms born in its tech industry. The country has long led the world in science and invention, landing the first humans on the Moon in 1969 and driving advances from the internet to modern medicine. Its universities are among the most renowned anywhere, drawing students and researchers from every nation.
Modern American public life is marked by deep political polarisation. Americans argue fiercely over immigration and the southern border, over gun ownership and the right to bear arms written into the constitution, over abortion, and over the role and reach of the federal government. Trust in institutions has been strained, most visibly when a mob stormed the Capitol on the 6th of January 2021 in an attempt to overturn a presidential election, an event that sharpened debate about the health of American democracy itself.
American history has shaped the modern world: the Declaration of Independence in 1776, the Civil War that ended slavery, decisive roles in both world wars, and the Cold War rivalry that sent the first humans to the Moon in 1969. The civil rights movement of the mid-twentieth century, which fought to end racial segregation, transformed the nation, and its struggles over equality, immigration, and democracy continue to define its public life.
The United States has a population of around 335 million people, the third largest in the world, and one of the most diverse, built by centuries of immigration from every continent. Most Americans live in sprawling metropolitan areas, from New York and Los Angeles to a belt of fast-growing cities across the south and west. English is the dominant language, with Spanish widely spoken, and the country's identity as a nation of immigrants remains central, and contested, in its politics.
