b67c4961_Lore___PlanetSide_2_Wiki__Event
[Date] May 13, 2445 [Event] 
World leaders sign the Armistice, bringing an end to the global war begun 19 years prior in 2426. Over the next several decades, borders fall and governments merge until all nations unite under a single entity known as the Terran Republic. Under the Declaration of Constancy, a council with representatives from every former nation is created and an executive system of elected Presidents begins.
Lore - PlanetSide 2 Wiki
Event