In Rome, the number of praetors is increased from one to two
An irrigation canal approximately one hundred miles long was built across the current-day province of Shenxi in China, greatly adding to the agricultural productivity of the area and to the military potency of the Qin dynasty.
Although no sources for the dates of his life and death remain, his work is usually associated with the reigns of Ptolemy I Soter (323-283 BCE) and Ptolemy II Philadelphos (285-246 BCE).
If the mention of Manetho in the Hibeh Papyri, dated to 240/1 BCE, is in fact Manetho the author of Aegyptiaca, then he may well have been working during the reign of Ptolemy III Euergetes (246-222 BCE) as well.
A statue of the god was imported between 286-278 BCE by Ptolemy (either Soter or Philadelphos), where Timotheus of Athens (an authority on Demeter at Eleusis) and Manetho oversaw the project.
Fragment of the 6th Pillar Edicts of Ashoka (238 BCE), in Brahmi, sandstones.
Antiochos refers to Antiochus II Theos of Syria (261-246 BCE), who controlled the Seleucid Empire from Syria to Bactria, in the east from 305 BCE to 250 BCE, and was therefore a direct neighbor of Ashoka.
Ptolemy refers to Ptolemy II Philadelphos of Egypt (285-247 BCE), king of the dynasty founded by Ptolemy I, a former general of Alexander the Great, in Egypt.