The creation of the Napoleonic Code.
The spread of greek culture.
enabling transportation and communication
The most lasting achievement of Alexander the Great was the spread of Koine Greek throughout the Mediterranean world and the Middle East. A common language became spoken from Spain to India.
the answer is the colosseum
The Hagia Sophia and the Pantheon are two lasting structures of the Roman Empire.
Democracy
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the invasion of Russia
It left behind a lasting religious achievement with Ethiopian Orthodox Christianity, stone architecture, and terrace farming.
Restoring lasting stability to the Empire after a century of civil wars.
achievement of euclid was his postulates
First europian to live among native americans