Italy is the larger of the two countries.
Bolivia is larger than neighboring Paraguay, and the two are the only landlocked countries of South America.Bolivia
Trough attrition. The US has had a larger population than Mexico since the 1820's and as you may notice, if two countries have an even technological advance, the one that wins is usually the one with the larger population.
There are only two countries, United Kingdom and Ireland; of the two Ireland has the smallest population.
China and Russia are two larger countries close to Japan.
quebec and ontario
China and India
Poland is 1
Beijing is the larger of the two.
The US population is about two and one-half times that of Japan.
china.....india
Argentina and Brazil.