Rome, I think. I'm not sure if it's a country though...Rome is/was a city. There was no country that was the capital of the Roman Empire, it was a city and the city's name is Rome. A country cannot be a capital of anything, it must have a capital itself.
The Ancient Persian Empire originated in what is modern-day Iran.
Capital of Kanishka was Purashapura (Modern Peshawar) Pakistan. V.D.Mahajan, Ancient India)
Italy it the modern European country which occupies the homeland of the ancient Romans. In fact, its capital is the city of Rome.
The Roman empire was centered on Italy and its capital city of Rome.
Jerusalem
Mexico-Tenochtitlan, capital of the ancient Aztec Empire.
Ancient Shushan, also known as Susa, is located in present-day Iran. It was one of the prominent cities of the ancient Persian Empire and served as a royal capital. The archaeological site of Shush, near the modern city of Shushtar in Khuzestan Province, marks the historical location of this ancient city.
Rome is located in the modern day country of Italy.
Rome was and still is in Italy. Nowadays it is the capital of Italy.
The Aztec Empire was located in what is today known as Mexico. Its capital, Tenochtitlan, was destroyed and rebuilt as Mexico City.
"Center" referring to the capital of the Safavid empire: Tabriz, Qazvin, and Isfahan were all the capital of the Safavid empire at different points in its existence. Tabriz is located in the current East Azerbaijan Province. Qazvin is the current capital of the Province of Qazvin. Ishafan is the current capital of Isfahan Province. All are within the modern country of Iran.
In the modern world (and in WW II) the Romans are the inhabitants of the city of Rome, which is the capital of Italy. In the ancient world, the ancient Romans conquered a large empire.