関連ワード:
which is the first development country in the world which is the first most developed country in the world which is the first country in the world to develop hydroelectricity which was the first country in the developing world to initiate family planning program which country is the first country to start planned development in the world which country is the first country to start plant development in the world which first country in the world which is the first country to be discovered which country in the world is most developed
