Eras

There are 14 Eras in this game.
 * 1) Prehistoric Era(200000 - 12000 BC)
 * 2) Ancient Era(12000 - 1200 BC)
 * 3) Classical Era(1200 BC - 450 AD)
 * 4) Medieval Era(450 - 1400 AD)
 * 5) Renaissance Era(1400 - 1750 AD)
 * 6) Industrial Era(1750 - 1900 AD)
 * 7) Atomic Era(1900 - 1990 AD)
 * 8) Information Era(1990 - 2050 AD)
 * 9) Nanotech Era(2050 - 2150 AD)
 * 10) Transhuman Era(2150 - 2300 AD)
 * 11) Galactic Era(2300 - 3000 AD)
 * 12) Cosmic Era(3000 - 4000 AD)
 * 13) Transcendent Era(4000 - 6000 AD)
 * 14) Future Era(6000 AD)