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Westward Expansion, Sectionalism, and the Civil War (1820-1865) — High School U.S. History practice questions

21 multiple-choice questions and 13 flashcards on Westward Expansion, Sectionalism, and the Civil War (1820-1865), about 8% of the High School U.S. History bank. Every one carries a written rationale.

Written and maintained by the CoStudy team · last updated 2026-10-12 · how we write and review questions

What this chapter covers

Westward Expansion, Sectionalism, and the Civil War (1820-1865) is one of 13 chapters in CoStudy's High School U.S. History bank, and it holds 21 of the bank's 270 multiple-choice questions — roughly 8% of the total. That proportion is not arbitrary: chapters follow the certifying body's published exam outline, and the number of questions in each is set by that domain's published weight, so the share of your practice time this chapter takes matches the share of the real exam it accounts for.

Studying by chapter is worth doing once you have a diagnostic score. A single overall percentage tells you whether you are close; it does not tell you which domain is dragging. Working a weak chapter in isolation, and re-testing it in isolation, is the fastest way to move a score that has stalled — and it is why the mock exams in CoStudy report by domain rather than as one number.

Free Westward Expansion, Sectionalism, and the Civil War (1820-1865) practice questions

10 questions drawn from this chapter, with the full rationale shown — the controlling principle behind the right answer, and why each wrong option tempts and fails.

Sherman's March to the Sea (1864) is an example of:

  1. guerrilla warfare
  2. trench warfare
  3. total war
  4. a naval blockade

Answer: C — total war

C) Correct — He destroyed railroads, crops and property to break the South's will and ability to fight. A) Uses small, irregular raiding units. B) Defined the siege of Petersburg and World War I. D) Was a separate Union strategy.

The Wilmot Proviso (1846) proposed:

  1. banning slavery in any land won from Mexico in the war
  2. paying Mexico for Texas
  3. allowing slavery everywhere in the West
  4. admitting California as a slave state

Answer: A — banning slavery in any land won from Mexico in the war

A) Correct — It passed the House but failed in the Senate, sharpening sectional conflict. B) Isn't what it proposed. C) Reverses it. D) Isn't what it proposed.

“Bleeding Kansas” refers to:

  1. a Civil War battle in Kansas
  2. violence between proslavery and antislavery settlers in the mid-1850s
  3. a drought that ruined Kansas farms
  4. fighting between Kansas settlers and the Mexican army

Answer: B — violence between proslavery and antislavery settlers in the mid-1850s

B) Correct — Both sides rushed to settle Kansas to control the slavery vote. A) The fighting came before the war. C) Isn't the meaning. D) Isn't the meaning.

The Battle of Antietam (1862) mattered most because it:

  1. ended the war
  2. was the first battle of the war
  3. let Lincoln issue the Emancipation Proclamation
  4. gave the Union full control of the Mississippi River

Answer: C — let Lincoln issue the Emancipation Proclamation

C) Correct — The Union stopped Lee's first invasion of the North, giving Lincoln the victory he wanted before announcing emancipation. A) Fighting went on for nearly three years. B) Was Fort Sumter. D) Was Vicksburg, 1863.

The Battle of Gettysburg (1863) was a turning point because it:

  1. let the Union capture the Confederate capital
  2. brought Britain into the war
  3. was the last battle of the war
  4. ended Lee's last invasion of the North

Answer: D — ended Lee's last invasion of the North

D) Correct — Confederate losses there were never made up. A) Richmond fell in 1865. B) Britain stayed out. C) The war went on two more years.

Uncle Tom's Cabin (1852) mattered politically because it:

  1. convinced the South to free enslaved people
  2. ended the Fugitive Slave Act
  3. started the Mexican-American War
  4. turned many Northerners against slavery

Answer: D — turned many Northerners against slavery

D) Correct — Harriet Beecher Stowe's novel made slavery's cruelty vivid to millions of readers. A) The South rejected it. B) The law stayed in force. C) Isn't connected.

The Kansas-Nebraska Act (1854) let settlers decide on slavery through:

  1. popular sovereignty
  2. the Missouri Compromise line
  3. a Supreme Court ruling
  4. a constitutional amendment

Answer: A — popular sovereignty

A) Correct — It repealed the Missouri Compromise line, setting off violence in Kansas. B) The act repealed it. C) Isn't the method. D) Isn't the method.

Southern states began to secede right after:

  1. the attack on Fort Sumter
  2. the Dred Scott decision
  3. the Emancipation Proclamation
  4. Lincoln's election in 1860

Answer: D — Lincoln's election in 1860

D) Correct — South Carolina left in December 1860; six more followed before Lincoln took office. A) Seven states had already seceded before it. B) Came in 1857, three years earlier. C) Came during the war.

The Emancipation Proclamation (1863) declared free the enslaved people:

  1. in every state, North and South
  2. only in the border states
  3. after the 13th Amendment was ratified
  4. in areas still in rebellion

Answer: D — in areas still in rebellion

D) Correct — It exempted the loyal border states and areas under Union control. A) It didn't apply to loyal states. B) It exempted them. C) Came in 1865, separately.

The Republican Party was founded in the 1850s mainly to:

  1. abolish slavery everywhere at once
  2. protect each state's right to nullify federal laws
  3. stop the spread of slavery into the western territories
  4. expand slavery into Kansas

Answer: C — stop the spread of slavery into the western territories

C) Correct — Most early Republicans opposed expansion of slavery, not slavery where it existed. A) Was the abolitionist position, beyond most Republicans then. B) Isn't its founding aim. D) Reverses its aim.

Westward Expansion, Sectionalism, and the Civil War (1820-1865) flashcards

4 cards from the 13 in this chapter.

Where did the Civil War begin?

Fort Sumter, South Carolina, in April 1861.

What was the Mexican-American War (1846–48)?

U.S. conflict with Mexico over Texas annexation and disputed border. Ended with Treaty of Guadalupe Hidalgo, ceding the Mexican Cession to the U.S.

What was the Kansas-Nebraska Act (1854)?

Allowed popular sovereignty on slavery in Kansas and Nebraska, repealing the Missouri Compromise. Led to 'Bleeding Kansas.'

What was the Underground Railroad?

A secret network of safe houses helping enslaved people escape to free states and Canada. Harriet Tubman was a famous conductor.

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