Because, all of the casualties were American, on both sides.
The answer to your question is that the civil war was fought between Americans, while in other wars, they were fought between America and other countries so twice as many Americans died.
It is estimated that the number of Americans who were killed during the Civil War were 620,000. Many more have died in other wars and conflicts.
137000
About as much toes and fingers of 100 people.
Zero. HIV/AIDS is thought to have originated in Africa in the early 20th century, several decades after the American Civil War, so no could possibly have died from it in the Civil War.
During the American Civil War, more than 620,000 Americans died, more than all other wars combined!
No, 620,000 people died in the American Civil War which is more than all of the other American Wars combined.
1,030 Americans died on Omaha Beach. 195 died on Utah. There were no Americans on any of the other beaches.
African-Americans fought mostly for the patriots in the American Revolution.
Approximately 360,000 Union soldiers died during the American Civil War.
It was pretty much exclusively fought amongst Americans. That's the nature of a civil war - a war within one's own country. So just about everyone killed on either side was an American (though there were some Europeans who fought as members either of the Union or Confederacy).
620,000 people died in the American Civil War, which is more than all of the other American wars combined.