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3 days ago · Flags of the World Every flag has a story. View flags of all the world’s countries and territories to learn the symbolism behind each design.

Dec 12, 2025 · Visit the Definitions and Notes page to view a description of each topic.

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Compares the average annual number of births during a year per 1,000 persons in the population at midyear; also known as crude birth rate.

News & Stories Center for the Study of Intelligence (CSI) The World Factbook World Leaders The Langley Files Spy Kids

6 days ago · News & Stories Center for the Study of Intelligence (CSI) The World Factbook World Leaders The Langley Files Spy Kids

Compares the average annual percent change in populations, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country. The rate may …