Here's why:
* Proper nouns name specific people, places, or things. They are always capitalized. Examples:
* People: John Smith, Queen Elizabeth
* Places: Paris, Mount Everest
* Things: The Eiffel Tower, the Great Wall of China
* "Russian" is an adjective, describing something related to Russia. It is not a specific name.
Here are some examples of how "Russian" is used:
* Adjective: "I am learning the Russian language."
* Noun: "The Russians are known for their beautiful literature."
Let me know if you have any other questions!