The anonymous Neo-Babylonian Chronicles were composed in Akkadian during the early Achaemenid, or Persian, period of rule over southern Mesopotamia (ca. 539–465 BCE). They present the most important pieces of historical information on the fall of the Assyrian Empire (614–609 BCE) and rise of the Chaldean, or Neo-Babylonian, Empire (ca. 626–539 BCE). There are seven tablets or tablet fragments of Neo-Babylonian Chronicles, labeled by scholars 1–7. Housed in the British Museum, their original find spot is unknown, though they are probably from Babylon or the surrounding areas.