Did the Indo-Europeans have slanted eyes?

It's impossible to say for certain what the physical appearance of the Indo-Europeans was like. We don't have any direct evidence of what they looked like, such as preserved skeletons or ancient portraits.

Here's why we can't definitively answer your question:

* No definitive "Indo-European" ethnicity: The term "Indo-European" refers to a language family, not a specific ethnicity. People speaking Indo-European languages have migrated and mixed throughout history, leading to a wide range of appearances across different groups.

* Limited archaeological evidence: While archaeologists have discovered archaeological sites associated with Indo-European cultures, the physical remains are often fragmented or incomplete. Reconstructing physical characteristics from bones alone is a challenging task.

* Genetic diversity: Modern populations with Indo-European languages exhibit a vast range of genetic diversity, indicating that the original Indo-European population was itself diverse.

Conclusion:

While it's tempting to try and reconstruct the appearance of a group of people from a long time ago, the evidence is simply not there to definitively say whether the Indo-Europeans had "slanted eyes" or any other specific physical trait.