What is the indo-European tribe called?

There isn't a single name for an "Indo-European tribe." The term "Indo-European" refers to a language family, not a specific tribe.

Here's why:

* Indo-European is a language family: This means it's a group of related languages that share a common ancestor.

* Many tribes spoke Indo-European languages: Over time, various tribes and peoples migrated from a common origin (likely somewhere around the Pontic Steppe) and spread across Europe, Asia, and parts of Africa.

* These tribes had different names: Some examples include the Celts, the Greeks, the Romans, the Slavs, the Germanic peoples, the Persians, and the Indians. These are just a few of the many groups that spoke Indo-European languages.

So, rather than having a single "Indo-European tribe," we have a diverse group of tribes who each developed their own languages, cultures, and identities within the larger Indo-European family.