How the Navajo nation works

The US has 575 federally recognized tribal nations, each a sovereign government

Tribal governments are sovereign, with authority to pass laws, run courts, and levy taxes on their lands. Unlike cities or counties, they are not created by states. Their sovereignty predates the United States itself and is recognized in the Constitution, treaties, and federal law.

The reservation system gives tribes limited self-governance while keeping them under federal control

Federal law designates Native nations as "domestic dependent nations"—a legal category that recognizes limited tribal sovereignty while subordinating tribes to federal authority. This ambiguous status, introduced by Chief Justice John Marshall's 1831 opinion in Cherokee Nation v. Georgia, has shaped conflicts over land and governance ever since.

Tribal courts handle justice on reservations, but face strict limits on whom they can prosecute

Reservation-based courts handle civil and criminal cases, but federal law sharply limits their authority over non-tribal members. As a result, non-Native individuals who commit crimes on reservations often fall outside tribal jurisdiction, creating potential gaps in accountability.

Some tribes push for national parks to be under Indigenous control

Ojibwe author and academic David Treuer talks about his push for 80 million acres of American national park land to be returned to Indigenous stewards. Treuer proposes the government grant control of this land to a consortium of tribes, which would maintain and manage it for use by all Americans.

The Dawes Act of 1887 broke up communally held tribal lands

Sometimes called the General Allotment Act, the Dawes Act divided reservation land into individual plots assigned to Native Americans, while "surplus" land was sold to white settlers. The policy led to Native tribes losing roughly 90 million acres, about two-thirds of their remaining land.

National parks, explained

Roughly 83 million acres of the United States are set aside as federal National Parks land, an area large as Germany. From the original Yellowstone Park to small monuments and memorials, learn the essentials on this portion of America dedicated to public enjoyment and recreation with our quick explainer video.

A 2020 Supreme Court ruling affirmed that nearly half of Oklahoma remains tribal land

In McGirt v. Oklahoma, the Supreme Court ruled 5-4 that the Muscogee Nation's reservation was never legally dissolved, thereby stripping Oklahoma of authority to prosecute tribal members for crimes committed on that land. Season One of the "This Land" podcast further explores how reservation court systems operate.

Explore a map of global native lands

This interactive map visualizes Indigenous territories across the world. Users can search by location, language, or tribe to explore the histories, cultures, and present-day communities connected to specific lands.

Native Americans were not granted US citizenship until 1924

The Indian Citizenship Act granted citizenship to all Native Americans born in the US, more than 130 years after the Constitution's ratification. Even then, some states continued to deny Native Americans the right to vote for decades.

A separate agency within the Department of the Interior manages the education of Native Americans on reservations

The Bureau of Indian Education (BIE), housed under the Department of the Interior's Bureau of Indian Affairs, manages 183 elementary and secondary schools on 64 reservations across 23 states, serving around 40,000 Native American K–12 students outside state public systems.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

The Standing Rock Sioux led a nationwide protest movement against an oil pipeline crossing their land

Beginning in 2016, thousands gathered at the Standing Rock Indian Reservation to block a crude oil pipeline that would run beneath Lake Oahe, the tribe's source of drinking water, and through a Sioux burial ground. The Obama administration halted construction, but Trump revived it weeks after taking office.

Many religions have core majorities in certain countries

Though most religions have members across the world, they also have major concentrated populations in specific nations. For example, 95% of Hindus live in India, while 85% of the world's Jews live in Israel and the US.

See a visual of the largest airlines in the US by market share

As of November 2024, Delta Airlines controlled roughly 17.8% of US airline market share, while American Airlines controlled about 17.5%, and Southwest controlled about 17.3%. Spirit Airlines, which would go on to shutter operations in 2026, controlled less than 5% of US airline industry market share at the time.

The Federal Reserve is the central bank of the US

No institution wields more power in US finance than the Federal Reserve—but opinion polls indicate that most Americans don't know what it does. Curious about the country's central bank? 1440's got your breakdown of how the Federal Reserve works.

The US Army inherited the Apache Wars after the Mexican-American War

The resolution of the Mexican-American War inserted the US Army into an ongoing conflict between Apache groups and outside powers—transforming local resistance into a decades-long struggle against American expansion known as the Apache Wars.

Ranchos were large land grants in California to Spanish, Mexican leading families

They were typically given to leading families or retired soldiers as means of settling the land with loyal people. The hundreds of ranchos have since shaped land-use policy in the area, determining plots of major cities and ranches today.

Poverty rates by US state

As of 2022, 37.9 million people in the US were living in poverty. But those people aren't evenly distributed among the 50 states. Some states and regions of the country are more impoverished than others. For instance, US poverty rates are relatively higher in the South than they are in the North. See the state-by-state breakdown with this map.

Napa produces only 4% of California's wine

Despite its reputation, the Napa Valley has a modest share of its state's annual wine production. The valley's over 400 wineries produce only 4% of the state’s wine.

US homes have been shrinking in recent years

Specifically, the median square footage of new single-family homes in the US has decreased in each of the past several years. In 2015, the typical new-construction home was about 2,467 square feet—but by 2024, that number had shrunk to 2,146 square feet.

View a distribution of wind turbine locations across the US

As of May 2025, the US Wind Turbine Database maps and provides technical specifications for 76,051 onshore and offshore turbines from 1,794 projects, ranging from small installations to large-scale wind farms.

Pheasant Island is controlled by both the Spanish and the French

The two-acre plot of land is a condominium—a territory shared by two countries. Pheasant Island (which, curiously, is not home to pheasants) is a holdover from the end of the Thirty Years' War between France and Spain, when it was designated as a neutral area dividing the countries.

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

Alaska has boroughs instead of counties, and nearly half the state has no borough-level government

Alaska's "Unorganized Borough" covers about 323,440 square miles—larger than the entire state of Texas—and lacks a borough-level government, so the state provides services that would typically be managed by counties or boroughs elsewhere.

The UN in NYC is an international zone belonging to all member-states

The four primary buildings are located on an 18-acre site on the East Side of Manhattan. The complex has its own postal administration, fire department, and security forces.

The US handed control of the canal back to Panama in 1999

This was the result of two treaties signed during President Jimmy Carter's presidency, one shifting control to Panama and the other declaring the canal zone neutral. In recent years, US officials have suggested the US may retake control. Experts agree that the only viable way would be through military force.

Indigenous women crafted the integrated circuits for the Apollo Guidance Computer

Applying their blanket-weaving skills, over 1,000 Navajo women in New Mexico were hired to connect circuit components in intricate patterns using a microscope. Outside Boston, "rope mothers" at the Raytheon facility wove the AGC's core memory using threaded metal wires.

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

Waves off the coast of Nazaré, Portugal, can reach over 100 feet and are caused by the area's deep underwater canyon geography

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

Watch contemporary footage covering the US-backed Shah of Iran fleeing the country in the face of the 1979 Iranian Revolution

Between 10 million and 50 million people in the US develop rashes from poison ivy, poison sumac, and poison oak each year.

The syncytiotrophoblast is the outer layer of the placenta and the largest human cell, spanning an area about twice that of a king-sized bedsheet.

Visualize how CRISPR-Cas9—a type of immune system used by single-celled organisms to attack invasive viruses—targets and makes precise changes to a gene's DNA.

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

Corals are themselves not coral reefs—the term refers to the tiny marine invertebrates that build the rigid reef.