At the start of the American Civil War, president Abraham Lincoln calls for 75,000 volunteers to quell an insurrection following the bombardment of Fort Sumter.

The American Civil War was a civil war in the United States between the Union and the Confederacy, which was formed in 1861 by states that had seceded from the Union. The central conflict leading to war was a dispute over whether slavery should be permitted to expand into the western territories, leading to more slave states, or be prohibited from doing so, which many believed would place slavery on a course of ultimate extinction.

Abraham Lincoln was the 16th president of the United States, serving from 1861 until his assassination in 1865. He led the United States through the American Civil War, defeating the Confederate States of America and playing a major role in the abolition of slavery.

Proclamation 80, titled "A Proclamation by the President of the United States, April 15, 1861," was a presidential proclamation signed by Abraham Lincoln, the 16th president of the United States. It called for 75,000 militiamen to suppress the rebellion in the states that had formed the Confederacy.

The Battle of Fort Sumter was the bombardment of Fort Sumter near Charleston, South Carolina, by the South Carolina militia. It ended with the surrender of the fort by the United States Army, beginning the American Civil War.