関連ワード:
which country is the oldest country in the world which country is the most oldest country in the world which country is the oldest country in the whole world which country is the oldest independent country in the world which country is the first poorest country in the world which country is the first democratic country in the world which country is the first largest country in the world which country is the first civilised country in the world which country is the first civilized country in the world which country is the first country in the whole world
