Louisiana Purchase
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50 free Louisiana Purchase trivia questions with answers — history quiz, new questions added Oct 2026.
In 1803 the United States bought a stretch of the continent so large that nobody at the table could say exactly where it ended. The Louisiana Purchase turned a young seaboard republic into a continental power almost overnight, and its consequences, from westward migration to the fight over slavery, shaped the century that followed. This quiz covers the whole story: why a European ruler short of money decided to sell, who did the bargaining and what was paid, how the land was explored and mapped, where its borders were finally drawn, and which present-day states and capital cities grew up on it. A few questions follow the Purchase into later life, through the laws, court cases and monuments tied to it. It is pitched for students revising American history, teachers who want a ready-made classroom quiz, and anyone who likes a good story about a bargain nobody planned. Every answer comes with a short explanation.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Which president, in office from 1801, approved the Louisiana Purchase after first seeking only a single port city?
Thomas Jefferson
Thomas Jefferson soon sent expeditions to chart the new land, whose boundaries no treaty had ever defined.
Q 02Which French leader sold the Louisiana Purchase lands to the United States while expecting a new war with Britain?
Napoleon Bonaparte
Napoleon Bonaparte had regained Louisiana only in 1800, trading lands in Tuscany for it as part of a plan to rebuild a French empire in North America.
Q 03What price did the United States pay France for the Louisiana Purchase, a sum it had to borrow from European banks?
$15 million
$15 million worked out to less than three cents an acre. The young republic had no such sum in its treasury, so it borrowed at six percent interest.
Q 04What did the Louisiana Purchase, which added about 828,000 square miles, do to the overall size of the United States?
Nearly doubled it
The deal nearly doubled it, and land from fifteen present-day states was eventually carved out of the new territory.
Q 05Which two army officers led the Corps of Discovery across the Louisiana Purchase and on to the Pacific Ocean in 1805?
Lewis and Clark
Lewis and Clark lost only one man on the whole journey, a sergeant who died of apparent appendicitis three months after setting out.
Q 06Which Native American teenager crossed the Louisiana Purchase with explorers while carrying her infant son on her back?
Sacagawea
Sacagawea reassured the nations the explorers met simply by being there: a group travelling with a woman and a baby was plainly not looking for a fight.
Q 07On which American holiday in 1803 was the Louisiana Purchase publicly announced?
Independence Day
Independence Day gave the news a fitting stage, though the treaty papers themselves took another ten days to reach Washington.
Q 08The Louisiana Purchase took in small corners of which two Canadian provinces, later handed to Britain in a border deal?
Alberta and Saskatchewan
Alberta and Saskatchewan hold the upper reaches of streams that flow south, and the Purchase was defined by a watershed, not by a line on a map.
Q 09Which sporting event, the first of its kind on American soil, was part of the 1904 Louisiana Purchase Exposition?
The Summer Olympics
The Summer Olympics had been awarded to Chicago, but the fair's hosts threatened to stage a rival meet and the Games were moved.
Q 10Which port city were American envoys sent to buy in 1803 before France offered the whole Louisiana Purchase instead?
New Orleans
New Orleans controlled the outlet for western farmers' crops, so the envoys were stunned to be offered a vast territory when they had come for a port.
Q 11Which river marked the eastern edge of the Louisiana Purchase, which covered most land draining into it from the west?
The Mississippi
The Mississippi had divided the continent's empires since the 1760s, when Spain took the lands to its west and Britain those to its east.
Q 12Which mountain range formed the rough western limit of the Louisiana Purchase, where rivers stop flowing east?
Rocky Mountains
The Rocky Mountains made a natural border because the deal covered a river basin, though the exact western line stayed in dispute until 1819.
Q 13In which city did envoys sign the Louisiana Purchase treaty in spring 1803, weeks before the news crossed the Atlantic?
Paris
Q 21Which future president was sent abroad as a special envoy in 1803 and helped sign the Louisiana Purchase treaty?
James Monroe
James Monroe carried a fallback plan: if the talks failed, he was to go on to London and negotiate an alliance with Britain instead.
Q 22Which Kentucky frontiersman was serving Spain as a local judge when the Louisiana Purchase made his home American?
Daniel Boone
Daniel Boone had moved west in 1799 to land Spain was so keen to settle that it ignored its own rule that immigrants be Catholic.
Q 23Which army explorer of the southwestern Louisiana Purchase was seized by Spanish troops in 1807 and taken to Chihuahua?
Zebulon Pike
Paris hosted the signing at a mansion called the Hôtel Tubeuf, and the Americans agreed fast, fearing the offer could be withdrawn at any time.
Q 14Which state's 1821 admission came with a ban on slavery across the remaining northern lands of the Louisiana Purchase?
Missouri
Missouri entered as a slave state alongside free Maine, and the line drawn across the Purchase stood until Congress effectively repealed it in 1854.
Q 15A slave uprising in which French Caribbean colony, now a nation, helped lead to the Louisiana Purchase?
Haiti
Haiti was then Saint-Domingue, a sugar colony that had made France enormously rich; without its revenues, Louisiana was of little value.
Q 16Which disease wiped out much of the French army sent to the Caribbean in 1802, helping bring on the Louisiana Purchase?
Yellow fever
Yellow fever killed thousands of French soldiers within months and then their commander, the brother-in-law of France's ruler.
Q 17Which former vice president was tried for treason in 1807 over an alleged plot to seize Louisiana Purchase land?
Aaron Burr
Aaron Burr was arrested on the president's orders but acquitted at trial, and the affair destroyed what was left of his political career.
Q 18Which political party opposed the Louisiana Purchase, fearing new western states would weaken New England's influence?
Federalists
The Federalists had members who went further: a group led by a Massachusetts senator explored forming a separate northern confederacy.
Q 19Which city hosted the 1904 world's fair named the Louisiana Purchase Exposition, which opened a year behind schedule?
St. Louis
St. Louis had planned the fair for the 1903 centennial, then delayed the opening so that more states and foreign countries could take part.
Q 20Which 630-foot stainless-steel monument anchors a national park first created to commemorate the Louisiana Purchase?
Gateway Arch
The Gateway Arch is exactly as wide as it is tall, a curve its architect said he began with mathematics and finished by eye.
Zebulon Pike had tried a few months earlier to climb the Colorado summit now named for him, giving up in waist-deep snow.
Q 24Which US coin received two new reverse designs in 2004 to mark the bicentennial of the Louisiana Purchase?
The nickel
The nickel first showed a design adapted from the peace medals once struck for Native leaders; its familiar look did not return until 2006.
Q 25What does the state of Louisiana call its counties, a legacy of the colony bought in the Louisiana Purchase?
Parishes
Parishes followed the colony's old church districts; American officials first split the territory into twelve counties, but the older units won out.
Q 26Which state preserves the swamp where surveyors set the starting point for mapping the Louisiana Purchase in 1815?
Arkansas
Arkansas forgot the spot for a century, until surveyors working a county line in 1921 stumbled on the two marked trees.
Q 27Which 1830 law, signed by Andrew Jackson, used Louisiana Purchase land to resettle Native nations forced from the East?
Indian Removal Act
The Indian Removal Act led to more than 60,000 people from at least 18 tribes being forced west, the Cherokee along what became the Trail of Tears.
Q 28Which future state did the United States claim as part of the Louisiana Purchase until renouncing it in an 1819 treaty?
Texas
Texas stayed Spanish under that bargain, though Henry Clay and other critics demanded that it be handed over as well.
Q 29What did the president consider seeking to legalise the Louisiana Purchase before his cabinet talked him out of it?
A constitutional amendment
A constitutional amendment proved unnecessary once his advisers pointed out that the president already held the power to negotiate treaties.
Q 30Which 1857 Supreme Court case ruled that Congress never had the power to ban slavery in the northern Louisiana Purchase?
Dred Scott v. Sandford
Dred Scott v. Sandford came three years after Congress had itself scrapped the ban, and both steps pushed the country toward civil war.