What is the most populous country in the world?

Which country is an archipelago of 115 islands in the Indian Ocean? What is the smallest country in Central America? Which country in the Caribbean is the smallest English-speaking country in the Americas? Which European country has a population of around 34,000 and covers an area of approximately 61 km²? Which country has the second-largest population in the world? Which country has the largest population in Africa? Which country has the largest population in Europe? Which country has the third-largest population in Southeast Asia?