with the founding of the Neo-Assyrian Empire (911–605 BC) by Adad-nirari II, Babylon found itself once again under the domination and rule of its fellow Mesopotamian state for the next three centuries. Adad-nirari II twice attacked and defeated Shamash-mudammiq of Babylonia, annexing a large area of land north of the Diyala River and the towns of Hīt and Zanqu in mid Mesopotamia. He made further gains over Babylonia under Nabu-shuma-ukin I later in his reign. Tukulti-Ninurta II and Ashurnasirpal II also forced Babylonia into vassalage, and Shalmaneser III (859–824 BC) sacked Babylon itself, slew king Nabu-apla-iddina, subjugated the Aramean, Sutean and Chaldean tribes settled within Babylonia, and installed Marduk-zakir-shumi I (855–819 BC) followed by Marduk-balassu-iqbi (819–813 BC) as his vassals. It was during the late 850's BC, in the annals of Shalmaneser III, that the Chaldeans and Arabs are first mentioned in the pages of written recorded history. Upon the death of Shalmaneser II, Baba-aha-iddina was reduced to vassalage by the Assyrian queen Shammuramat (known as Semiramis to the Persians, Armenians and Greeks), acting as regent to his successor Adad-nirari III who was merely a boy. Adad-nirari III eventually killed Baba-aha-iddina and ruled there directly until 800 BC until Ninurta-apla-X was crowned. However, he too was subjugated by Adad-Nirari III. The next Assyrian king, Shamshi-Adad V then made a vassal of Marduk-bel-zeri. Babylonia briefly fell to another foreign ruler when Marduk-apla-usur ascended the throne in 780 BC, taking advantage of a period of civil war in Assyria. He was a member of the Chaldean tribe who had a century or so earlier settled in a small region in the far southeastern corner of Mesopotamia, bordering the Persian Gulf and southwestern Elam. Shalmaneser IV attacked him and retook northern Babylonia, forcing a border treaty in Assyria's favour upon him. However, he was allowed to remain on the throne, and successfully stabilised the part of Babylonia he controlled. Eriba-Marduk, another Chaldean, succeeded him in 769 BC and his son, Nabu-shuma-ishkun in 761 BC. Babylonia appears to have been in a state of chaos during this time, with the north occupied by Assyria, its throne occupied by foreign Chaldeans, and civil unrest prominent throughout the land. The Babylonian king Nabonassar overthrew the Chaldean usurpers in 748 BC, and successfully stabilised Babylonia, remaining untroubled by Ashur-nirari V of Assyria. However, with the accession of Tiglath-Pileser III (745–727 BC) Babylonia came under renewed attack. Babylon