Which one of the following is the third most populous country in the world?
U.S.A.
Finding the Third Most Populous Country
This question asks us to identify the country with the third largest population in the world. Understanding global population distribution is important for geography and social studies.
To answer this, we need to know the approximate populations of the world's largest countries and their ranking.
World Population Rankings
Based on current population estimates, the countries with the largest populations are generally ranked as follows:
- China
- India
- United States of America (U.S.A.)
- Indonesia
- Pakistan
- Nigeria
- Brazil
- Bangladesh
- Russia
- Mexico
It's important to note that population rankings can change slightly over time, especially between the top two countries, China and India, but the top few countries tend to remain consistent in their relative positions for some time.
Identifying the Third Country
Looking at the ranking above:
- The country with the largest population is China.
- The country with the second largest population is India.
- The country with the third largest population is the United States of America (U.S.A.).
Therefore, the U.S.A. is the third most populous country in the world.
Analyzing the Options
Let's look at the provided options:
- China: This is the most populous country.
- U.S.A.: This is the third most populous country.
- Australia: This country has a significantly smaller population and is not among the top populous countries.
- India: This is the second most populous country.
Based on our analysis, the U.S.A. fits the description of the third most populous country.
| Rank | Country | Approximate Population |
|---|---|---|
| 1 | China | > 1.4 billion |
| 2 | India | > 1.4 billion |
| 3 | U.S.A. | ~ 330-340 million |
This table clearly shows the U.S.A. at the third position in terms of population.
Revision Table: Key Population Concepts
| Term | Definition | Relevance to Population |
|---|---|---|
| Population Density | The number of people per unit area (e.g., square kilometer). | Helps understand how crowded a country is, distinct from total population. |
| Birth Rate | The number of live births per thousand people in a year. | Affects population growth and future population size. |
| Death Rate | The number of deaths per thousand people in a year. | Affects population growth and future population size. |
| Population Growth Rate | The rate at which the number of individuals in a population increases or decreases. | Determines how quickly a country's population is changing its rank. |
Additional Information on Global Population
Understanding population figures involves more than just the total count. Here are some additional points related to global population:
- Population figures are estimates and are constantly changing due to births, deaths, and migration.
- Factors like economic development, healthcare, education, and social policies significantly impact birth rates and death rates, thereby affecting population growth.
- Population distribution across continents is uneven, with Asia being the most populous continent.
- Population projections suggest future shifts in ranking, particularly with some African nations expected to see significant population growth.
- Studying population helps in understanding global trends related to resource consumption, environmental impact, and economic development.
Knowing the top most populous countries is a fundamental piece of knowledge in global demographics.
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