secession noun The formal withdrawal of a region, state, or group from a larger political union or organization. The southern states' secession from the Union led directly to the Civil War. + union noun The act of joining separate things together, or an organization representing workers' interests. The treaty marked the formal union of the two small kingdoms into one nation. + confederacy noun An alliance of states, groups, or people united for a common purpose, often political or military. Several small tribes formed a confederacy to defend their territory more effectively. + abolition noun The official ending of a system, practice, or law, especially one considered unjust. The abolition of slavery in the United States came with the Thirteenth Amendment. + emancipation noun The act of freeing someone from legal, social, or political restrictions, especially from slavery. The Emancipation Proclamation declared enslaved people in Confederate states to be free. + slavery noun The system or condition of owning people as property and forcing them to work without pay or freedom. Slavery was legally abolished in the United States by the Thirteenth Amendment in 1865. + plantation noun A large estate or farm, especially in a warm climate, where crops such as cotton, sugar, or tobacco are grown. The historic plantation is now a museum that documents the lives of the enslaved people who worked there. + blockade noun An action that seals off a place to prevent people, goods, or information from entering or leaving. The navy set up a blockade to stop supply ships from reaching the enemy port. + cavalry noun Soldiers who fight while mounted on horses, or, historically, an army unit trained for this. The general ordered the cavalry to charge the enemy's exposed flank. + infantry noun Soldiers who fight on foot, as opposed to those in tanks, on horseback, or in the air. The general ordered the infantry to advance at dawn under cover of fog. + artillery noun Large-caliber weapons, such as cannons, used to launch projectiles over long distances. The advancing troops came under heavy artillery fire from the hillside. + regiment noun A large military unit made up of several battalions, usually commanded by a colonel. The regiment marched for three days before reaching the front line. + casualty noun A person killed, injured, or missing as a result of an accident, disaster, or war. The earthquake left dozens of casualties across the small mountain town. + battlefield noun The area of land where a battle takes place or has taken place. Historians still study the old battlefield to understand how the battle unfolded. + reconstruction noun The process of rebuilding something that was damaged, destroyed, or fundamentally changed, especially after a war or disaster. The reconstruction of the flooded town took nearly three years and required international funding. + rebellion noun Organized, often violent resistance against an established authority or government. The rebellion was crushed within weeks, but it left lasting resentment among the population. + militia noun A military force made up of ordinary citizens rather than professional soldiers, often mobilized in emergencies. The colonial militia gathered quickly to defend the town from the approaching raiders. + draft noun An early or preliminary version of a piece of writing, plan, or document, subject to further changes. She sent the first draft of her essay to a friend for feedback before revising it. + siege noun A prolonged military operation in which an army surrounds a place to cut off supplies and force it to surrender. The city endured a brutal siege that lasted nearly a year before it fell. + skirmish noun A brief, minor fight or clash, especially between small groups rather than full armies. A border skirmish broke out between the two patrols before officers restored calm. + ratify verb To give formal approval to an agreement, making it officially valid. The Senate must ratify the treaty before it can take effect. + amendment noun A formal change, correction, or addition made to a law, constitution, or document. Congress passed an amendment to the bill before sending it to the president. + segregation noun The enforced or systematic separation of people, especially by race, ethnicity, or class. The civil rights movement fought to end racial segregation in public schools. + abolitionist noun A person who campaigns for the ending of a practice, especially slavery. Frederick Douglass was a leading abolitionist who had escaped slavery himself. + homefront noun The civilian population and activities of a country whose military is fighting a war elsewhere. Factories on the homefront switched to producing tanks and ammunition during the war. + surrender verb To stop resisting an enemy or opponent and submit to their authority, or to give something up. The general refused to surrender even after his troops were vastly outnumbered. + veteran noun A person who has served in the armed forces, especially during a war. The parade honored local veterans who had fought overseas decades earlier. + monument noun A structure, such as a statue or building, built to honor a person or commemorate an event. The tall monument in the square honors soldiers who died defending the city. + border state noun A state located along a national or regional boundary, especially one historically positioned between opposing sides. During the Civil War, Kentucky was a border state that never officially left the Union. + fugitive noun A person who is running away, especially from the law or from danger. Police searched the woods for hours after the fugitive escaped from custody. +