Between the withdrawal of Egyptian rule in Syria and the western advance of Assyria, there was an interval during which the city-states of Phoenicia owned no suzerain. Byblos had kings of its own, among them Ahiram, Abi-baal, and Ethbaal (Ittobaʿal) in the 10th century, as excavations have shown. The history of this time period is mainly a history of Tyre, which not only rose to a hegemony among the Phoenician states but also founded colonies beyond the seas. Unfortunately, the native historical records of the Phoenicians have not survived, but biblical accounts indicate that the Phoenicians lived on friendly terms with the Israelites. In the 10th century bce Hiram, king of Tyre, aided the construction of Solomon’s Temple in Jerusalem in return for rich gifts of oil, wine, and territory. In the following century Ethbaal of Tyre married his daughter Jezebel to Ahab, king of Israel, and Jezebel’s daughter in turn married the king of Judah.

In the 9th century, however, the independence of Phoenicia was increasingly threatened by the advance of Assyria. In 868 bce Ashurnasirpal II reached the Mediterranean and exacted tribute from the Phoenician cities. His son, Shalmaneser III, took tribute from the Tyrians and Sidonians and established a supremacy over Phoenicia (at any rate, in theory), which was acknowledged by occasional payments of tribute to him and his successors. In 734 bce Tiglath-pileser III in his western campaign established his authority over Byblos, Arados, and Tyre. A fresh invasion by Shalmaneser V took place in 725 when he was on his way to Samaria, and in 701 Sennacherib, facing a rebellion of Philistia, Judah, and Phoenicia, drove out and deposed Luli, identified as king of both Sidon and Tyre. In 678 Sidon rebelled against the Assyrians, who marched down and annihilated the city and rebuilt it on the mainland. Sieges of Tyre took place in 672 and 668, but the city resisted both, only submitting in the later years of Ashurbanipal.

During the period of Neo-Babylonian power, which followed the fall of Nineveh in 612 bce, the pharaohs made attempts to seize the Phoenician and Palestinian seaboard. Nebuchadrezzar II, king of Babylon, having sacked Jerusalem, marched against Phoenicia and besieged Tyre, but it held out successfully for 13 years, after which it capitulated, seemingly on favorable terms.

Persian period

Phoenicia passed from the suzerainty of the Babylonians to that of their conquerors, the Persian Achaemenian dynasty, in 538 bce. Not surprisingly, the Phoenicians turned as loyal supporters to the Persians, who had overthrown their oppressors and reopened to them the trade of the East. Lebanon, Syria-Palestine, and Cyprus were organized as the fifth satrapy (province) of the Persian empire. At the time of Xerxes I’s invasion of Greece (480 bce), Sidon was considered the principal city of Phoenicia; the ships of Sidon were considered the finest part of Xerxes’ fleet, and its king ranked next to Xerxes and before the king of Tyre. (Phoenician coins have been used to supplement historical sources on the period. From the reign of Darius I [522–486 bce], the Persian monarchs had allowed their satraps and vassal states to coin silver and copper money. Arados, Byblos, Sidon, and Tyre therefore issued coinage of their own.) In the 4th century Tyre and later Sidon revolted against the Persian king. The revolt was suppressed in 345 bce.

Greek and Roman periods

In 332 bce Tyre resisted Alexander the Great in a siege of eight months. Alexander finally captured the city by driving a mole into the sea from the mainland to the island. As a result, Tyre, the inhabitants of which were largely sold into slavery, lost all importance, soon being replaced in the leadership of the regional markets by Alexandria, the conqueror’s newly founded city in Egypt. In the Hellenistic Age (323–30 bce) the cities of Phoenicia became the prize for the competing Macedonian dynasties, controlled first by the Ptolemies of Egypt in the 3rd century bce and then by the Seleucid dynasty of Syria in the 2nd century and early decades of the 1st century bce. The Seleucids apparently permitted a good measure of autonomy to the Phoenician cities. Tigranes II (the Great) of Armenia brought an end to the Seleucid dynasty in 83 bce and extended his realm to Mount Lebanon. The Romans eventually intervened to restore Seleucid sovereignty, but, when anarchy prevailed, they imposed peace and assumed direct rule in 64 bce.

Phoenicia was incorporated into the Roman province of Syria, though Aradus, Sidon, and Tyre retained self-government. Berytus (Beirut), relatively obscure up to this point, rose to prominence by virtue of Augustus’s grant of Roman colonial status and by the lavish building program financed by Herod the Great (and in turn by his grandson and great-grandson). Under the Severan dynasty (193–235 ce) Sidon, Tyre, and probably Heliopolis (Baalbek) also received colonial status. Under this dynasty the province of Syria was partitioned into two parts: Syria Coele (“Hollow Syria”), comprising a large region loosely defined as north and east Syria, and Syria Phoenice in the southwestern region, which included not only coastal Phoenicia but also the territory beyond the mountains and into the Syrian Desert. Under the provincial reorganization of the Eastern Roman emperor Theodosius II in the early 5th century ce, Syria Phoenice was expanded into two provinces: Phoenice Prima (Maritima), basically ancient Phoenicia; and Phoenice Secunda (Libanesia), an area extending to Mount Lebanon on the west and deep into the Syrian Desert on the east. Phoenice Secunda included the cities of Emesa (its capital), Heliopolis, Damascus, and Palmyra.

During the period of the Roman Empire, the native Phoenician language died out in Lebanon and was replaced by Aramaic as the vernacular. Latin, the language of the soldiers and administrators, in turn fell before Greek, the language of letters of the eastern Mediterranean, by the 5th century ce. Lebanon produced a number of important writers in Greek, most notably Philo of Byblos (64–141) and, in the 3rd century, Porphyry of Tyre and Iamblichus of Chalcis in Syria Coele. Porphyry played a key role in disseminating the Neoplatonic philosophy of his master, Plotinus, which would influence both pagan and Christian thought in the later Roman Empire.

In many respects, the two most important cities of Lebanon during the time of the Roman Empire were Heliopolis and Berytus. At Heliopolis the Roman emperors, particularly the Severans, constructed a monumental temple complex, the most spectacular elements of which were the Temple of Jupiter Heliopolitanus and the Temple of Bacchus. Berytus, on the other hand, became the seat of the most famous provincial school of Roman law. The school, which probably was founded by Septimius Severus, lasted until the destruction of Berytus itself by a sequence of earthquakes, a tidal wave, and fire in the mid-6th century. Two of Rome’s most famous jurists, Papinian and Ulpian, both natives of Lebanon, taught as professors at the law school under the Severans. Their judicial opinions constitute well over one-third of the Pandects (Digest) contained in the great compilation of Roman law commissioned by the emperor Justinian I in the 6th century ce.

In 608–609 the Persian king Khosrow II pillaged Syria and Lebanon and reorganized the area into a new satrapy, excluding only Phoenicia Maritima. Between 622 and 629 the Byzantine emperor Heraclius mounted an offensive and restored Syria-Lebanon to his empire. This success was short-lived; in the 630s Muslim Arabs conquered Palestine and Lebanon, and the old Phoenician cities offered only token resistance to the invader.