User blog comment:DunBanner/New Poll! ...and a heads up/@comment-92.9.204.207-20120617182205

AoE I: 3000BC-476AD (476, Fall of Rome)

AoE II: is set between 476-1571 (1571, Battle of Lepanto, Ottoman invasion of Cyprus)

AoE III: is set between 1571-1914, therefore in my opinion I would say:

AoE IV would be set between 1914-1991. As 1914 marks the start of the First World War, whilst 1991 marks the end of the Cold War.

AoE V: 1991-Future