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The energy required to accelerate an interstellar spaceship depends on
Civil War
A conflict between groups within the same country or state, often characterized by intense violence and lasting social and economic impact.
British Recognition
The acknowledgment by the United Kingdom of the independence, sovereignty, or status of another state or entity.
Confederacy
Historically refers to the Confederate States of America, a coalition of southern states that seceded from the United States from 1861 to 1865 during the Civil War.
Battle at Antietam
A significant battle during the American Civil War, known for being one of the bloodiest single-day battles in American history, occurring on September 17, 1862.
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