Union Blockade During the Civil War (2024)

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Union Blockade

History >> Civil War

During the Civil War, the Union attempted to blockade the southern states. A blockade meant that they tried to prevent any goods, troops, and weapons from entering the southern states. By doing this, the Union thought they could cause the economy of the Confederate States to collapse.

When did the blockade run?

The Union blockade began just a few weeks after the start of the Civil War. Abraham Lincoln announced it on April 19, 1861. The Union continued to blockade the South throughout the Civil War until the war ended in 1865.

The Anaconda Plan

The Union blockade was part of a larger strategy called the Anaconda Plan. The Anaconda Plan was the brainchild of Union General Winfield Scott. General Scott felt that the war could take a long time and that the best supplied armies would win. He wanted to keep foreign countries from shipping supplies to the Confederates.

Union Blockade During the Civil War (1)
Scott's Anaconda
by J.B. Elliott

The plan was called the Anaconda Plan because, like a snake, the Union meant to constrict the South. They would surround the southern borders, keeping out supplies. Then the army would split the South in two, taking control of the Mississippi River.

Cotton for Weapons

The South did not have a lot of industry at the time. This meant they could not make enough weapons to supply its armies. However, the South did have cotton which many foreign countries such as Great Britain relied on. If they could keep their ports open, they could trade cotton for weapons. The Anaconda Plan was a long term approach to winning the war.

How did the Union blockade the South?

The Union Navy used as many as 500 ships to patrol the East Coast all the way from Virginia south to Florida and the Gulf Coast from Florida to Texas. They focused their efforts on major ports and on keeping larger shipments of goods from making it through.

Did any ships get through?

A number of ships did make it through. One estimate shows that nearly 80 percent of the attempts to get though the blockade made it safely. However, these were mostly small, fast ships called blockade runners. They were small and fast which helped them to elude the Union Navy, but they also had small cargos, so not a lot of supplies were able to get through.

Union Blockade During the Civil War (2)
Blockade Runner
by R.G. Skerrett

A number of the ships that made it through were operated by British sympathizers. These ships were commanded by British officers from the Royal Navy who were allowed to take a leave from the British Navy in order to help the Confederate States.

Results

At the start of the Civil War, many people thought that the blockade was a waste of time. They felt that the war would be over quickly and that the blockade would have little impact on the outcome of the war. However, by the end of the war, the blockade had a significant impact on the South. People across the South were suffering from a lack of supplies and the overall economy ground to a halt. This included the army, where many of the men were nearing starvation by the end of the war.

Interesting Facts About the Union Blockade

  • The exports of cotton from the South fell by nearly 95 percent by the end of war due to the Union Blockade.
  • Blockade runners could make a lot of money if their ships and cargo successfully passed the blockade.
  • The Union Navy captured or destroyed around 1,500 blockade runner ships during the course of the Civil War.
  • The blockade covered around 3,500 miles of coastline and 180 ports.

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Overview
  • Civil War Timeline for kids
  • Causes of the Civil War
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Major Events
  • Underground Railroad
  • Harpers Ferry Raid
  • The Confederation Secedes
  • Union Blockade
  • Submarines and the H.L. Hunley
  • Emancipation Proclamation
  • Robert E. Lee Surrenders
  • President Lincoln's Assassination
Civil War Life
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People
  • Clara Barton
  • Jefferson Davis
  • Dorothea Dix
  • Frederick Douglass
  • Ulysses S. Grant
  • Stonewall Jackson
  • President Andrew Johnson
  • Robert E. Lee
  • President Abraham Lincoln
  • Mary Todd Lincoln
  • Robert Smalls
  • Harriet Beecher Stowe
  • Harriet Tubman
  • Eli Whitney
Battles
  • Battle of Fort Sumter
  • First Battle of Bull Run
  • Battle of the Ironclads
  • Battle of Shiloh
  • Battle of Antietam
  • Battle of Fredericksburg
  • Battle of Chancellorsville
  • Siege of Vicksburg
  • Battle of Gettysburg
  • Battle of Spotsylvania Court House
  • Sherman's March to the Sea
  • Civil War Battles of 1861 and 1862

Works Cited

History >> Civil War

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Union Blockade During the Civil War (2024)

FAQs

What was the Union blockade during the Civil War response? ›

The blockade, although somewhat porous, was an important economic policy that successfully prevented Confederate access to weapons that the industrialized North could produce for itself. The U.S. Government successfully convinced foreign governments to view the blockade as a legitimate tool of war.

How effective was the Union blockade quizlet? ›

-The blockade effectively stopped ships trying to enter or leave Southern ports, and Southerners began to feel the result when store shelves became bare.

How effective was the blockade in the Civil War? ›

The blockade was largely successful in reducing 95% of cotton export in the South from pre-war levels, devaluing its currency and severely damaging its economy. However, it was less successful in preventing war material from being smuggled into the South.

Why was the Union blockade so damaging to the Confederate government? ›

Because the Union navy blockaded the Confederate ports, the Confederacy could not export raw materials such as cotton, nor could it import war supplies. This resulted in the Confederate army suffering from shortages of supplies.

How did the Union blockade affect the South during the Civil War? ›

Essentially—and not altogether intentionally—the Union blockade balkanized the Confederate economy into two different non-supporting spheres, physically separating the Southern food supply west of the Mississippi from the financial resources east of the Mississippi.

What was the effect of the Union blockade on Georgia during the Civil War? ›

Frances Harrold explains that the blockade of Savannah and its eventual fall to the Union brought increased trade and manufacturing to Atlanta. A shortage of supplies near the end of the war brought business to Atlanta and led to the city's growth and resurgence in the aftermath.

Why was the Union blockade unsuccessful? ›

Not only were the Federal ships outclassed in speed and maneuverability by the professional blockade runners, but the nature of the Atlantic seaboard was such that a fleet of several thousand armed, shallow draft vessels would have been needed to make even a pretense of patrolling it.

What was the significance of the Union blockade quizlet? ›

What was the purpose of the Union Blockade? The purpose of the blockade was to crush the life out of the confederacy by preventing essential supplies reaching the armies and civilians.

What was the Union strategy to blockade the South? ›

Anaconda plan, military strategy proposed by Union General Winfield Scott early in the American Civil War. The plan called for a naval blockade of the Confederate littoral, a thrust down the Mississippi, and the strangulation of the South by Union land and naval forces.

Was the Union blockade unconstitutional? ›

Lincoln's imposition of the blockade on April 19 without clear guidelines from either the Constitution or the Congress, and with the possibility of legitimizing the Confederacy by suggesting that war existed, was a bold act. And it was a decision that most historians have excused.

When was the Union blockade in the Civil War? ›

What was the South's greatest strength in the Civil War? ›

The South's greatest strength lay in the fact that it was fighting on the defensive in its own territory. Familiar with the landscape, Southerners could harass Northern invaders. The military and political objectives of the Union were much more difficult to accomplish.

Why did the Union blockade the war? ›

In less than a week, the Union began its blockade of the southern states in an effort to prevent the trade of goods, supplies, and weapons between the Confederacy and other nations. Prize law is that part of international law which concerns the capture of enemy property by a belligerent at sea during war.

What was the most alarming Confederate threat to the Union blockade came from? ›

While the British caused the Union troubles by helping build ships for the Confederacy, like the CSS Alabama, the most alarming threat to the Union blockade was the iron-‐plated Merrimack because it sank many Union wooden ships.

Why was the Union blockade called the Anaconda Plan? ›

Because the blockade would be rather passive, it was widely derided by a vociferous faction of Union generals who wanted a more vigorous prosecution of the war and likened it to the coils of an anaconda suffocating its victim. The snake image caught on, giving the proposal its popular name.

What was the Union blockade called? ›

The Union Blockade, nicknamed Scott's Great Snake, made the open harbors of California desirable to the Confederacy. Wikimedia Commons. At the time, the Union blockade of the South was the largest ever attempted in world history.

What was the purpose of the Union blockade quizlet? ›

What was the purpose of the Union Blockade? The purpose of the blockade was to crush the life out of the confederacy by preventing essential supplies reaching the armies and civilians.

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