Secret Eras

These are eras for Angry Birds.

Eras

 * Hydrogen Era-The beginning of Angry Birds World-10 mil to 7.5 mil ago
 * Stone Era-7.5 mil-4.5 mil
 * Bronze Era-4.5 mil-2 mil
 * Iron Era-2 mil-1 mil
 * Early Middle Days-1 mil-9.6 cen
 * High Middle Days-9.6 cen-8.7 cen
 * Latter Middle Days-8.7 cen-8 cen
 * Pre-colonial era-8 cen-4 cen
 * Colonial era-4 cen-1.9 cen
 * Factory era-1.9 cen-1.2 cen
 * Progressive era-1.2 cen-8.5 dec
 * Modern era-8.5 dec-5 dec
 * Postmodern era-5 dec-1 dec
 * Contemperary Era-1 dec-(before-after)-1 dec
 * The tommorow-1 dec-5.5 dec
 * The future-5.5 dec-1.9 cen
 * Arctic future-1.9 cen-5 cen
 * The second start-Destruction & Recreation with no pigs-5 cen and after

Trivia
Most of these are models of the ones in Forge of Empires.