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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it is really long question but I will need to read material from your book and the internet to compose your answer
The highest local government is fedral and the lowest in Unitary state
The Declaration of Independence
The three powers that formed was Great Britain, France, and Russia the Triple Entente :)))
