They usually traded these for slaves which were captured and sold to them.
Answer:
A confederation is a type of government in which the state or local government is the final authority.
Explanation:
It should be noted that the most significant development in the cultural life of the Roman Empire was the building of engineering marvels like the Colosseum and Pantheon.
It should be noted that during the Republic, important contributions are made by the Roman Empire such as the contributions to law, architecture, technology, literature, etc.
The most notable contribution was the engineering marvels that were built such as the magnificent aqueducts, Colosseum, and the Pantheon.
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Read the first two sentences of the second paragraph. Read it here. https://www.archives.gov/founding-docs/declaration-transcript
