The Louisiana Purchase, the wars of the 1800s, the Civil War, Abraham Lincoln and the end of slavery.
The 2025 version has 10 questions in this section; the 2008 version has 7. Each question below shows the official accepted answers and, where USCIS explains it, a short excerpt from a USCIS study guide. Practise just this topic with the quiz.
Questions about current officials and your own state are not in the quiz — those answers change. Check them on your state page and on uscis.gov. Full test: free practice test.
For applicants who filed Form N-400 on or after October 20, 2025. Answers are copied from the official USCIS list (M-1778); any one accepted answer is enough.
What territory did the United States buy from France in 1803?
In 1803, the United States purchased the Louisiana Territory from France. The Louisiana Territory included a large amount of land between the Mississippi River and the Rocky Mountains.
Name one war fought by the United States in the 1800s.
The Mexican-American War was one war fought by the United States in the 1800s.
Name the U.S. war between the North and the South.
The Civil War was fought between the North and the South between 1861 – 1865.
The Civil War had many important events. Name one.
During the Civil War, Abraham Lincoln signed the Emancipation Proclamation. The North won the Civil War when the South surrendered in April 1865.
Abraham Lincoln is famous for many things. Name one. 65/20
Abraham Lincoln led the United States during the Civil War. He was the 16th President of the United States, and he served as President from 1861 – 1865.
What did the Emancipation Proclamation do?
The Emancipation Proclamation freed the slaves in most Southern states. Most people enslaved in Southern states were not actually freed until after the Civil War was over.
What U.S. war ended slavery?
After the Civil War was over, all the people who were enslaved in Southern states were freed. The 13th Amendment says that slavery is illegal in the United States.
What amendment says all persons born or naturalized in the United States, and subject to the jurisdiction thereof, are U.S. citizens?
Other ways a person can become a U.S. citizen include: being born in the United States, under conditions set by the 14th Amendment.
When did all men get the right to vote?
Name one leader of the women's rights movement in the 1800s.
Susan B. Anthony also fought for women’s rights. She wanted women to be treated equally to men, and she wanted women to have the right to vote in the United States.
For applicants who filed Form N-400 before October 20, 2025. Answers are from the official USCIS list (rev. 08/21).
What territory did the United States buy from France in 1803?
The Louisiana Territory was a large area west of the Mississippi River. It was 828,000 square miles. In 1803, the United States bought the Louisiana Territory from France for $15 million.
Name one war fought by the United States in the 1800s.
The United States fought four major wars in the 1800s—the War of 1812, the Mexican-American War, the Civil War, and the Spanish-American War. The War of 1812 lasted from 1812 through 1815.
Name the U.S. war between the North and the South.
The American Civil War is also known as the War between the States. It was a war between the people in the northern states and those in the southern states.
Name one problem that led to the Civil War.
The Civil War began when 11 southern states voted to secede (separate) from the United States to form their own country, the Confederate States of America.
What was one important thing that Abraham Lincoln did? 65/20
Abraham Lincoln was president of the United States from 1861 to 1865, and led the nation during the Civil War. Lincoln thought the separation of the southern (Confederate) states was unconstitutional, and he wanted to preserve the Union.
What did the Emancipation Proclamation do?
In 1863, in the middle of the Civil War, President Abraham Lincoln issued the Emancipation Proclamation. The Emancipation Proclamation declared that slaves living in the southern or Confederate states were free.
What did Susan B. Anthony do?
Susan B. Anthony was born in Massachusetts on February 15, 1820. She is known for campaigning for the right of women to vote.
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