By population, it would be USA.
Brazil is the largest country in South America, and also has the largest population is South America.
Brazil, as the largest country, also has the largest population.
It is Brazil
El salvador
The country having the largest population in the western hemisphere is the United States of America. It has about 303 million people.
The world's third-largest country by area is the People's Republic of China. The world's third-largest country by population is the United States of America.
Brazil has the largest population density, and I think Columbia is next.
America or as people call it the United States of America (U.S.A)by population, Russia
China has the largest population in the world with approximately 1.3 billion people.
China has the largest population of any country in the world, followed closely by India. {This information is good as of February, 2009.}
Cuba has the largest population. It has about 11.3 million people
The 4th largest country by area is the People's Republic of China, which covers a total of 3.705 million square miles. The 4th largest country by population is Indonesia, with a population of 252,164,800 people.