What happened on July 29

Ancient Mesopotamian empire (626–539 BC)

The Neo-Babylonian Empire or Second Babylonian Empire, historically known as the Chaldean Empire, was the last polity ruled by monarchs native to ancient Mesopotamia. Beginning with the coronation of Nabopolassar as the King of Babylon in 626 BC and being firmly established through the fall of the Assyrian Empire in 612 - 609 BC, the Neo-Babylonian Empire was conquered by the Achaemenid Persian Empire in 539 BC, less than a century after the founding of the Chaldean dynasty. The defeat of the Assyrian Empire and subsequent return of power to Babylon marked the first time that the city, and southern Mesopotamia in general, had risen to dominate the ancient Near East since the collapse of the Old Babylonian Empire nearly a thousand years earlier.

Ajaw of Palenque from 615 to 683

Kʼinich Janaab Pakal I, also known as Pacal or Pacal the Great, was ajaw of the Maya city-state of Palenque in the Late Classic period of pre-Columbian Mesoamerican chronology. He acceded to the throne in July 615 and ruled until his death. Pakal reigned 68 years—the fifth-longest verified regnal period of any sovereign monarch in history, the longest in world history for more than a millennium, and the second-longest reign of any monarch in the history of the Americas.

Part of the Arab-Byzantine Wars

The sack of Thessalonica was the capture and subsequent sack of the Byzantine city of Thessalonica by the Abbasid Caliphate and Tulunids in the year 904, led by Leo of Tripoli, a privateer and Muslim convert.

Battle between allied Burgundy and Ivrea against Italy in 923 AD

The Battle of Fiorenzuola was fought on 29 July 923 between the forces of Rudolph II of Burgundy and Adalbert I of Ivrea on one side and Berengar I of Italy on the other. The battle was a defeat for Berengar, who was thus de facto dethroned and replaced by Rudolf as King of Italy. His own grandson and namesake, Berengar II, who would later be king of Italy as well, fought on the winning side against him.

Conflicts in the Balkans (680–1355)

The Byzantine–Bulgarian wars were a series of conflicts fought between the Byzantine Empire and the Bulgarian Empire which began after the Bulgars conquered parts of the Balkan peninsula after 680 AD. The Byzantine and First Bulgarian Empire continued to clash over the next century with varying success, until the Bulgarians, led by Krum, inflicted a series of crushing defeats on the Byzantines. After Krum died in 814, his son Omurtag negotiated a thirty-year peace treaty.