Ray Brown from the National Park Service says two percent of the American population died in the Civil War.

公园管理处的雷·布朗（Ray Brown）表示，美国2％的人口在内战中丧生。

youdao

Ray Brown from the National Park Service says two percent of the American population died in the Civil War.

公园管理处的雷·布朗（Ray Brown）表示，美国2％的人口在内战中丧生。

youdao