Jefferson omitted a plan to go beyond the Louisiana Territory in his funding request

Jefferson sent Lewis and Clark to map, trade, and secure the West

Beyond seeking a water route to the Pacific, Jefferson tasked the Corps of Discovery with mapping the new Louisiana Territory, cataloging its resources, and establishing trade with Native nations.

Jefferson’s Lewis and Clark expedition joined the centuries-long hunt for Northwest Passage

For centuries, leaders pursued a direct seafaring trade route from Europe to Asia. Jefferson joined this quest by sending Lewis and Clark west, though they confirmed no such practical interior route existed across the continent.

Jefferson feared European control in the West of North America

Jefferson pushed for the Louisiana Purchase to prevent France or Spain from dominating the western frontier, securing control of the Mississippi River and vast lands that he felt were essential to America’s strategic and economic future.

Madison urged Jefferson to accept the Louisiana Purchase despite constitutional concerns

As secretary of state, James Madison helped negotiate the 1803 Louisiana Purchase and persuaded Thomas Jefferson to proceed, arguing that the strategic and economic stakes outweighed the unresolved constitutional questions.

The Lewis and Clark expedition lasted over two years

The Corps of Discovery departed St. Louis in May 1804 and returned in September 1806, covering more than 8,000 miles by boat, horseback, and on foot. See a timeline of the journey’s key events.

Meriwether Lewis grew up in the same neighborhood as Jefferson

Hailing from Jefferson’s Albemarle County neighborhood in Virginia, Lewis was a trusted aide and former Army officer. After leading the Corps of Discovery, he became Louisiana Territory governor in 1806, dying three years later under mysterious circumstances.

The Louisiana Purchase nearly doubled America’s size in 1803

Acquired from France for $15M, the Louisiana Purchase added 828,000 square miles to the United States—stretching from the Mississippi River to the Rockies. US ambassadors in France signed the papers to buy the tract from the embattled Napoleon Bonaparte for a mere $15M before Jefferson learned the terms, due to the advantageous nature of the deal.

As president, Thomas Jefferson expanded federal power despite opposing centralized authority

Although Jefferson argued for limited national power, his presidency expanded federal authority through actions such as the Louisiana Purchase, territorial governance, and federal enforcement—reflecting a pragmatic departure from his earlier strict interpretation of the Constitution.

The expedition purchased more than 260 separate items to supply their journey

Preparing for two years in the wilderness, Lewis acquired hundreds of supplies, including medicine, food, weapons, and 63 lbs of pigtail tobacco. The total bill was estimated to be around $2,324 (around $60,000 today).

Thomas Jefferson dismissed the Erie Canal as 'little short of madness'

When first proposed, President Jefferson scoffed at the idea of carving a 363-mile waterway through wilderness and rock. With no precedent in American engineering, the canal seemed impossible.

William Clark negotiated one-tenth of all ratified treaties between Native Americans and the US

After the expedition, Clark held key territorial and federal roles, overseeing western expansion and Native relations. While he expressed sympathy for displaced natives, he oversaw the transfer of millions of acres from Native nations to US control through various treaties.

The Barbary Wars were an early test of whether a president could wage war without a formal declaration from Congress

Jefferson sent naval forces against North African pirates without a congressional declaration of war, acting under his own authority. Years later, Madison took the opposite approach and formally sought congressional authorization.

Thomas Jefferson delivered his 1801 State of the Union address in writing

In 1801, President Jefferson ended in-person State of the Union addresses, feeling they were too monarchial, and sent written messages instead—a practice that lasted until 1913. His first message was written and sent via his secretary, Meriwether Lewis, who later led the Lewis and Clark expedition.

John Marshall invested in western land speculation

Like many Virginia elites of his era, Marshall invested in large tracts of western land, including holdings in Kentucky and the Ohio valley. His financial interests mirrored the broader post-Revolutionary pattern of land speculation among political leaders.

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

Learn about the extraordinary life of Sacagawea’s son, Jean Baptiste

Born during the Lewis and Clark Expedition, Jean Baptiste Charbonneau (nicknamed "Pomp") traveled to Europe at 18 with Duke Paul of Württemberg, spending six years in his court—gaining a classical education and fluency in multiple languages.

Americans touring the Louvre were inspired to create their own grand museums

The one-time royal residence was first transformed into a public museum in 1793 amid the French Revolution. Americans visiting in the early 1800s were both turned off by the aristocratic grandeur and compelled by the open access to the public. James Fenimore Cooper, the author of "The Last of the Mohicans," apparently came and measured the length of galleries.

President Polk deliberately provoked war with Mexico

After Mexico refused to sell California and New Mexico, President James K. Polk ordered US troops into disputed territory between the Nueces River and the Rio Grande—knowing it would likely spark a conflict. When fighting broke out, he used it to justify declaring war.

Gambling funded America's early expansion

In the colonial era, lotteries were viewed as a voluntary tax to help fund infrastructure and capital projects. The idea came from Europe, which had used lotteries dating back to the 16th century. The image below is from a Massachusetts lottery in 1758.

The Smithsonian was first funded by a man who never visited the US

The Smithsonian Institution was established through a gift in the will of James Smithson, a British scientist who never visited America but left his fortune to establish an institution dedicated to the "increase and diffusion of knowledge."

The hidden hallway behind Mount Rushmore and why it’s unfinished

Mount Rushmore was designed to be more than a massive monument to US presidents, and its ambitious plans were part of the reason why. This fascinating video explores its backstory, creation, and the hidden tunnel behind President Lincoln's head.

Early Washington lodging was scarce and uncomfortable for new congressmen

Boardinghouses near the Capitol in 1800 were so limited that many congressmen had no private rooms. Albert Gallatin complained that he had to share a bedroom with another congressman, "and look upon the same male faces day in and day out."

George Washington spent thousands of dollars on ice cream in a single summer

Records show that America's first president purchased a "cream machine for ice" as early as 1784. An accounting record from 1790 reveals that Washington spent $200—roughly equivalent to $6,300 today—on ice cream.

Congress settled for the Viking program after canceling the Voyager Mars program

NASA's proposed Voyager missions to Mars and Venus in the 1970s were canceled due to budget cuts and the Apollo 1 fire. The Viking program's smaller scope—focused on data collection—was the economically viable alternative to manned Mars mission proposals.

Louisiana has parishes instead of counties

Louisiana is the only US state that uses parishes rather than counties as its primary local government unit. The distinction traces back to the state's French and Spanish Catholic colonial heritage.

The average American vacation costs $2K per person

A 2024 report found the average vacation for one person costs around $2K, with half of those surveyed suggesting they would not travel because of the price. A third of those willing to vacation despite the costs said they were willing to take on debt to pay for it.

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

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

The USPS spent $3.97B in 2024, accounting for .058% of the federal budget.

During the French Revolution, a botanist's letter asking about "dear Rhus" (poison ivy) was intercepted, leading authorities to suspect he was conspiring with the Russians.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

Despite being favored by 87% of Americans, Congress does not have term limits.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

Meet the 56 signers of the Declaration of Independence—most of whom didn't put pen to paper until August 2, 1776—and see their original signatures.

Venture capital is a form of funding provided to early-stage companies with high growth potential, typically in exchange for an equity (or ownership) stake

Track the location of the Voyager probes, currently between 13 and 15 billion miles away from Earth.

When a Paris department store hesitated to sell Estée Lauder's perfume, she 'accidentally' broke a bottle, causing the smell to spread throughout the store and shoppers to start asking to buy the scent.

Louisiana's 'Cancer Alley' is infamous for having some of the highest industrial pollution, toxic air emissions, and cancer risks in the US.

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

The 2026 Ebola outbreak in the DRC is spurring new Ebola vaccine development for the Bundibugyo species.

Search a massive database of over 4 decades of clues from the TV quiz show 'Jeopardy!'

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

Against his wishes, Albert Einstein's brain was removed before his cremation, and the pathologist responsible stored it for decades in mason jars within a beer cooler.

See this overview of the firework rules across all 50 states, ranging from a complete ban on non-professional fireworks in Massachusetts to states with more lax rules like Indiana.

Explore the animals that populate the depths of the ocean, from fish and coral in the first few hundred feet, all the way down to the bottom of the Mariana Trench.

The boiling temperature of water decreases with increasing elevation because the molecules need less energy to overcome the lower atmospheric pressure associated with thinner air.

The Beatles' US label rejected the band's first two singles, 'Please Please Me' and 'From Me to You,' with one executive calling the band 'dead in the water.'