From Halopedia, the Halo wiki
- March: The Callisto Treaty is signed. The Frieden and Koslovics formally surrender to the UNSC, officially ending the Interplanetary War.
- The Unified Earth Government becomes a full-fledged governing entity in the wake of the conflicts of the 2160s. Now, the victors are forced to deal with a less obvious but equally serious threat: overpopulation and a massive military with no enemy to fight. Overpopulation caused by massive population surges in the post-war period, combined with the destruction and famine bred by the Rain Forest Wars, threaten to destabilize the economy in the coming years.