Strictly speaking, the use of the name “Assyria” for the period before the latter half of the 2nd millennium bce is anachronistic; Assyria—as against the city-state of Ashur—did not become an independent state until about 1400 bce. For convenience, however, the term is used throughout this section.

In contrast to southern Mesopotamia or the mid-Euphrates region (Mari), written sources in Assyria do not begin until very late, shortly before Ur III. By Assyria—a region that does not lend itself to precise geographic delineation—is understood the territory on the Tigris north of the river’s passage through the mountains of the Jabal Ḥamrīn to a point north of Nineveh, as well as the area between Little and Great Zab (a tributary of the Tigris in northeast Iraq) and to the north of the latter. In the north, Assyria was later bordered by the mountain state of Urartu; to the east and southeast its neighbour was the region around ancient Nuzi (near modern Kirkūk, “Arrapchitis” [Arrapkha] of the Greeks). In the early 2nd millennium the main cities of this region were Ashur (160 miles north-northwest of modern Baghdad), the capital (synonymous with the city god and national divinity); Nineveh, lying opposite modern Mosul; and Urbilum, later Arbela (modern Irbīl, some 200 miles north of Baghdad).

In Assyria, inscriptions were composed in Akkadian from the beginning. Under Ur III, Ashur was a provincial capital. Assyria as a whole, however, is not likely to have been a permanently secured part of the empire, since two date formulas of Shulgi and Amar-Su’ena mention the destruction of Urbilum. Ideas of the population of Assyria in the 3rd millennium are necessarily very imprecise. It is not known how long Semitic tribes had been settled there. The inhabitants of southern Mesopotamia called Assyria Shubir in Sumerian and Subartu in Akkadian; these names may point to a Subarean population that was related to the Hurrians. Gasur, the later Nuzi, belonged to the Akkadian language region about the year 2200 but was lost to the Hurrians in the first quarter of the 2nd millennium. The Assyrian dialect of Akkadian found in the beginning of the 2nd millennium differs strongly from the dialect of Babylonia. These two versions of the Akkadian language continue into the 1st millennium.

In contrast to the kings of southern Mesopotamia, the rulers of Ashur styled themselves not king but partly iššiakum, the Akkadian equivalent of the Sumerian word ensi, partly rubā’um, or “great one.” Unfortunately, the rulers cannot be synchronized precisely with the kings of southern Mesopotamia before Shamshi-Adad I (c. 1813–c. 1781 bce). For instance, it has not yet been established just when Ilushuma’s excursion toward the southeast, recorded in an inscription, actually took place. Ilushuma boasts of having freed of taxes the “Akkadians and their children.” While he mentions the cities of Nippur and Ur, the other localities listed were situated in the region east of the Tigris. The event itself may have taken place in the reign of Ishme-Dagan of Isin (c. 1953–c. 1935 bce), although how far Ilushuma’s words correspond to the truth cannot be checked. In the Babylonian texts, at any rate, no reference is made to Assyrian intervention. The whole problem of dating is aggravated by the fact that the Assyrians did not, unlike the Babylonians, use date formulas that often contain interesting historical details; instead, every year was designated by the name of a high official (eponymic dating). The conscious cultivation of an old tradition is mirrored in the fact that two rulers of 19th-century Assyria called themselves Sargon and Naram-Sin after famous models in the Akkadian dynasty.

Aside from the generally scarce reports on projected construction, there is at present no information about the city of Ashur and its surroundings. There exists, however, unexpectedly rewarding source material from the trading colonies of Ashur in Anatolia. The texts come mainly from Kanesh (modern Kültepe, near Kayseri, in Turkey) and from Hattusa (modern Boğazköy, Turkey), the later Hittite capital. In the 19th century bce three generations of Assyrian merchants engaged in a lively commodity trade (especially in textiles and metal) between the homeland and Anatolia, also taking part profitably in internal Anatolian trade. Like their contemporaries in southern Mesopotamia, they did business privately and at their own risk, living peacefully and occasionally intermarrying with the “Anatolians.” As long as they paid taxes to the local rulers, the Assyrians were given a free hand.

Clearly these forays by Assyrian merchants led to some transplanting of Mesopotamian culture into Anatolia. Thus the Anatolians adopted cuneiform writing and used the Assyrian language. While this influence doubtless already affected the first Hittites arriving in Anatolia, a direct line from the period of these trading colonies to the Hittite empire cannot yet be traced.

From about 1813 to about 1781 Assyria was ruled by Shamshi-Adad I, a contemporary of Hammurabi and a personality in no way inferior to him. Shamshi-Adad’s father—an Amorite, to judge by the name—had ruled near Mari. The son, not being of Assyrian origin, ascended the throne of Assyria as a foreigner and on a detour, as it were, after having spent some time as an exile in Babylonia. He had his two sons rule as viceroys, in Ekallātum on the Tigris and in Mari, respectively, until the older of the two, Ishme-Dagan, succeeded his father on the throne. Through the archive of correspondence in the palace at Mari, scholars are particularly well informed about Shamshi-Adad’s reign and many aspects of his personality. Shamshi-Adad’s state had a common border for some time with the Babylonia of Hammurabi. Soon after Shamshi-Adad’s death, Mari broke away, regaining its independence under an Amorite dynasty that had been living there for generations; in the end, Hammurabi conquered and destroyed Mari. After Ishme-Dagan’s death, Assyrian history is lost sight of for more than 100 years.

The Old Babylonian empire