The ancient Greek city of Amphipolis was…
July 480 BCE
The ancient Greek city of Amphipolis was founded near the entrance of the Strymon River to the Aegean, at the site previously known as Ennea Odoi (Nine roads).
When Xerxes I of Persia crosses the river during his invasion in 480 BCE, he buries alive nine young boys and nine maidens as a sacrifice to the river god.