What are the inventions the barbarians created?

Answer

Don't quote me on this, but I think that the answer is that the Barbarian tribes were sometimes known to rush into battle stark naked to intimidate their enemies, but they also possessed a wide range of shields and armor. Among the most effective was chainmail, which may have been invented in Europe by the Gallic Celts in the third century B.C.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.