With the exception of Byblos, which had been a flourishing center from at least the third millennium B.C., the Phoenician cities first emerged as urban entities around 1500 B.C. As Egyptian and Near Eastern documents record, the Late Bronze Age (1550–1200 B.C.) was a time of economic prosperity for these trading centers. Confined to a narrow coastal strip with limited agricultural resources, maritime trade was a natural development. With the decline of Egyptian influence about 1200 B.C., the cities were freed from foreign domination. The ultimate collapse of Egyptian power in the region occurred about 1175 B.C. at the hands of the Sea Peoples, of whom the best known are the Philistines. Along with Israelites, they settled in the southern Levant. For reasons not yet fully understood, the massive disruptions caused elsewhere in the Levant appear to have had a minimal effect upon the Phoenician coastal centers. There is therefore much continuity in Phoenician traditions from the Late Bronze Age until the Hellenistic period around 300 B.C.
By the late eighth century B.C., the Phoenicians, alongside the Greeks, had founded trading posts around the entire Mediterranean and excavations of many of these centers have added significantly to our understanding of Phoenician culture. Sea traders from Phoenicia and Carthage (a Phoenician colony traditionally founded in 814 B.C.) even ventured beyond the Strait of Gibraltar as far as Britain in search of tin. However, much of our knowledge about the Phoenicians during the Iron Age (1200–500 B.C.) and later is dependent on the Hebrew Bible, Assyrian records, and Greek and Latin authors. For example, according to the Greek historian Herodotus, Phoenician sailors, at the request of the pharaoh Necho II (r. ca. 610–595 B.C.), circumnavigated Africa.