Which is now! During my down time, I played through to 1000bc. Here is what happened:
1910 BC- Zimbabwe worker>warrior.
Worker mines cow #2.
Road over horses started.
1830 BC- warrior>Impi
1750 BC- More unrest in Zimbabwe.
1700 BC- Impi>Impi Ulundi in unrest.
1650 BC- NW barbarian camp taken by warrior. Northern scout killed by barbarians. Bapedi barracks >temple.
1625 BC- Zimbabwe Impi>Settler.
1600 BC- last scout out there dies at the hands of barbarians.
1575 BC- Ulundi Granary>worker.
1525 BC- Alphabet>writing.
1500 BC- Road to Bapedi complete, dye road begun.
Zimbabwe settler>temple.
1450 BC- Ulundi worker > settler.
1400 BC- Hlobane founded on NW horse tile. First build= barracks.
1350 BC- Trade Persia 240 gold +5 gpt to Persia for Iron Working.
1325 BC- Dye road done. Cutting forest on dye tile.
Zimbabwe temple>settler.
1300 BC- Ulundi Settler>temple.
1250 BC- Persia wants 2 gold not to destroy me. I appease him.
Zimbabwe settler>barracks.
1200 BC- Trondheim completes Collosus.
1175 BC- Zimbabwe barracks>Impi.
Hlobane barracks>Impi.
1150 BC- Islandhwana founded due south of Bapedi on the Islandhwana river. First build=temple.

Barracks at Hlobane sold off... reset build there to barracks and reduce science funding.
Bapedi temple>archer.
1100 BC- Intombe founded at mouth of Islandhwana river. First build: barracks.
Zimbabwe Impi>worker.
1075 BC- Irrigating dye tile, other 2 workers irrigating out to Zimbabwe's wheat tile. Zimbabwe worker>settler.
1050 BC- Bapedi archer> scout
1000 BC- Current state of play... 19 turns to writing.
I'd appreciate comments, especially regarding my build cues, my decision to pay thru the nose for Iron working, and how I can avoid city unrest without having to micromanage... there's no way, right?
EDIT: The interested will found BlockaZulu 1000bC in the uploads 4 folder...