Mauritania is about 1.2 times smaller than Peru.

Peru is approximately 1,285,216 sq km, while Mauritania is approximately 1,030,700 sq km, making Mauritania 80.2% the size of Peru. Meanwhile, the population of Peru is ~32.3 million people (28.1 million fewer people live in Mauritania).
This to-scale comparison of Peru vs. Mauritania uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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