Ahum:
2262, August 12th: First successful subspace jump to delta serpentis by the Pioneer ship "Gaia"
2263-4: Sub-Space travel is quickly utilized by GTA PCT - Provisional Cooperation Treaty. Most Nation States with a high industrial capacity cooperate on a massive building programme to create subspace capable ships to carry a sizeable colonisation fleet beyond Delta Serpentis.
2311: Near by systems fully colonized, Antares system and other border systems have automated science outposts. Final Unification of earth govornments into the infant GTA. While the early GTA was more akin to an expanded United Nations, it was more concerned with domestic issues that military concerns.
2318: First Vasudan Contact - Communication failiures frustrate both sides.
2320: Large scale distribution of Terran/Vasudan translation device to both cultures. Several High level Terran officers commence a soft campaign against the rest of the security council.
Sept 2320-nov 2320: Several Terran attacks on vasudan assets cause outrage on vasuda prime. Orders to the patrols cannot be traced by Intelligence.
None of this information from the timeline is canon, it is rough estimation at best. However the rest of it's entries are.