Avalonian trading vessels make their first encounter with Aspian ships and offer the usual trade stuff (we want your livestock, food, and bronze for finished products such as glass beads and containers, ceramics, jewelry of precious metals, and iron tools; Cultural exchanges in the form of books/scrolls are also sought after). As Avalonian vessels sailing that far have generally interacted with Atensians, the language barrier is not a particularly difficult hurdle.
Avalonian research into improved ironwork reaches completion. It's not high grade steel or anything like that, in fact, Avalonian iron is still slightly inferior to bronze, but it's cheaper to produce and better than it was, so Avalonians are happy. Research goes into improving the weaponry of the Garrison of Nazgar with the intention to make the improvements widespread and simultaneously standardize Avalonian weaponry, and into early artillery type stuff.
Could also blame good old fashioned eurocentrism.
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