100-350:
Europe: The Irish have adapted the League pentekonter into a more streamlined, shallower-drafted vessel suitable for coastal use; this is employed on frequent raids and occasional settlements of the Gallic mainland. Trends towards a more centralized government are slow, but visible.
The nation of Gades has reached a relative degree of equilibrium; its navy is occupied by fending off the Marrekechi, and its armies hold the Pyrenees steady against the Gauls. Instead of conquest, most of its energy is focused internally; philosophy (particularly Shmuelistic religion) flourishes, as do the arts.
Macedon, on the other hand, is just beginning to enter a new era of military might. Access to petroleum and sulfur deposits in OTL Rumania and Ukraine respectively allowed the development of a new weapon, an adhesive and highly flammable substance called Alexandrian fire. Its use against the Ismaili has crippled the latter's hopes of expansion by sea, and techniques to use the weapon on land are in development.
[It should be noted that Alexandrian fire is not the relatively liquid, siphonable substance OTL called Greek fire, but considerably more gelatinous, relying on a high proportion of pitch for cohesion; this makes it deadly against ships, particularly rigging, but relatively ineffective against infantry or stone walls.]
Africa: Marrakechi conversion efforts have made considerable progress in western sub-Saharan kingdoms; though nominally under the leadership of the Amir of Marrakech, these local kings are still relatively independent.
The Axumites have focused their efforts on naval expansion; they claim control over the entirety of the Nile, and have established a substantial naval base on Madagascar. The King of Axum has near-absolute control over his own people, but the gap between the Arabic-speaking Ismaili and the native peoples remains considerable, weakening control of the general populace.
The Kalif in Damascus exercises a very heavy hand on his nation. Between ruthless persecution of the myriad regional religions, and incessant war against the steppe tribes, the Macedonians, and the Axumites, the Ismaili Empire is slowly but surely exhausting itself. Trade and communication simply do not pass through the region, mostly routing themselves through Axum instead.
Asia: In southern India, Tamilakam has been united for the first time in its history (a feat never achieved in OTL). The Tamil nation, enriched by the fertility of the Deccan and by trade with Axum and China, is beginning to exert control over the rest of the subcontinent, though little overt warfare occurs.
[It should be noted that Asoka did not, as in OTL, convert to Buddhism; this caused the nascent religion to wither into obscurity.]
In China, after a period of famine, a Taoist-influenced peasant rebellion erupted (187; roughly equivalent to the OTL Yellow Turban Rebellion). Unlike in OTL, this rebellion achieves considerable success, especially after dissident generals and nobles see in it an opportunity to remove the current dynasty from power. When the dust finally settles, some fifty years later, the Empire of Han has been divided into three kingdoms, Wu, Wei, and Shu. Wei, in the north, has greatly changed its patterns of governance, slimming the bureaucracy considerably and devolving much control to the local level. Legalism is greatly diminished. Wu, in the south, remains largely similar to the Han, though a reduction in sea-trade results from the expense of the war. In the west, the rump state of Shu is a hotbed of brigandage and rebellion, used by its neighbors as a proxy battleground.