Which roman emperor is known for his efforts to protect and secure the boundaries of the empire? constantine augustus hadrian vespasian
the answer to your question " Which roman emperor is known for his efforts to protect and secure the boundaries of the empire? " is Hadrian
It should be noted that the roman emperor that is known for his efforts to protect and secure the boundaries of the empire is Hadrian.
He was born into a Roman Italo-Hispanic family, and protect and secure the boundaries of the empire.
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