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Where are Indo-European languages spoken across Europe and Asia?

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Indo-European languages are spoken extensively across Europe, South Asia, and parts of Southwest Asia, as well as in areas of historical European settlement.1

Europe

In Europe, the language family is dominated by three major divisions: Romance, Germanic, and Slavic languages. Other notable branches include Greek, Albanian, Baltic, and the remnants of the Celtic branch, which are primarily found in the British Isles and Brittany.12

Asia

In Asia, the Indo-Iranian branch is the most prominent.1
* South Asia: Indo-Aryan languages are widely spoken in India, Bangladesh, Nepal, Pakistan, and Sri Lanka.13
* Southwest and Central Asia: Iranian languages are spoken in Iran and Afghanistan. Additionally, Russian has expanded significantly across Siberia and the Central Asian republics.14

Historically, the Anatolian branch was spoken in Turkey and Syria, while the Tocharian branch was located in China near the Takla Makan Desert.5