What century did Shulgi reign for 48 years?
Shulgi Shulgi ( Šulgi, formerly read as Dungi) of Ur was the second king of the "Sumerian Renaissance" in the Third Dynasty of Ur. He reigned for 48 years, from c. 2029 – 1982 BC (short chronology). His accomplishments include the completion of construction of the Great Ziggurat of Ur, begun by his father Ur-Nammu.
Darius I Darius I (Old Persian: "Dārayava(h)uš", New Persian: داریوش "Dāryuš" ; c. 550–486 BCE) was the third king of the Persian Achaemenid Empire. Also called Darius the Great, he ruled the empire at its peak, when it included much of West Asia, the Caucasus, parts of the Balkans (Thrace-Macedonia and Paeonia), most of the Black Sea coastal regions, parts of the North Caucasus, Central Asia, as far as the Indus Valley in the far east, and portions of north and northeast Africa including Egypt (Mudrâya), eastern Libya and coastal Sudan.