19th-century form of national sovereignty 意味

• 19世紀的｛せいき てき｝な国家主権論｛こっか しゅけん ろん｝
  

• 19th-century mentality:    19世紀｛せいき｝の考え方That's the 19th-century mentality. それは時代遅れの発想｛はっそう｝だよ。