The Battle of Antietam, fought in 1862, holds what grim distinction in American military history?

The longest battle of the Civil War

The final major battle of the war

The bloodiest single day of combat

The first battle to use ironclad ships

The Union's strategic victory at the Battle of Antietam gave President Lincoln the political standing to issue which landmark executive order?

The Homestead Act, which encouraged western settlement

The Gettysburg Address, which redefined the nation's purpose

The Emancipation Proclamation, which declared slaves in rebel states free

The suspension of habeas corpus, allowing detention of suspected sympathizers

To capture Washington D.C. and end the war immediately

To secure a decisive victory on Northern soil to gain European support

To recruit new soldiers from the border state of Maryland

To destroy the Union's industrial capacity in Pennsylvania