Frontier

Native Americans were killed and their lands were
taken away by military.
The power calls that " Frontier " and " Pioneering ".

It was called " Prosperity " and " Expansion " when
Japan was killing people all over Asia.
「 開拓 」　・・　アメリカが先住民を殺し、土地を奪った行為の呼び名
「 領土拡大 」「 繁栄 」　・・　それの日本版

歴史はそういう言葉がどっさり。