Are there any planned languages ​​based on Indo-European?

That's a serious question. I'm familiar with the basic theoretical principles behind PIE. "Truly planned languages" are Interlingua , based on Vulgar Latin, or Interslavic (medzuslovanski). These are essentially hybrid languages ​​composed of the cognate vocabulary of the entire Latin or Slavic language. Have there ever been attempts – even by individuals – to imaginatively…

Indo-European?

Hello, The Indo-European language is the most widely spoken language family. Its widespread distribution was due to the migration of peoples beginning in the 15th century. Can anyone tell me more about this: Did the Romans then spread and conquer other territories, and did the language family spread because of this, or what?