Civilization V: The Swedish Saga, part 1 (4000 B.C. to 430 A.D.)
1725 B.C.: Christianity is founded... somewhere.
The first world religion is up and running, but in a civ I haven't met yet. I'm still a ways away from founding a religion myself, so that could be a problem. My money is on the Celts, based on how much I outpaced everyone in the Faith race playing as them.
1575 B.C.: The trade road between Stockholm and Sigtuna is completed, leading to a flourishing of trade and ideas between the Sister Cities of the Snowrun.
1475 B.C.: The Swedes master the art of construction, turning their previously modest tribal settlements into magnificent cities of stone and metal over the next few hundred years. They have risen from a confederation of tribes to a true civilization.
And thus, I arrive in the Classical Era! I'm already doing tremendously better than the Celtic Chronicle. I'm the 4th of 12 civs to get here (vs. 7th as the Celts), and I've reached the milestone a whole 325 years earlier. My hope is to outpace everyone and be the first to hit the Medieval Era.