1520AD: Railing/irrigation of all currently internal tiles is complete. My workers are now irrigating/railing unclaimed territory. When I had ToA still active, some coastal cities borders pushed rather far into the water, so I'll have more land tiles after the reposition.
I'm researching Steel, so I went ahead and set all towns to be abandoned (all but 4

) to make Settlers. Since most will take 30 turns to complete, I'm hoping to have them just a turn or two before Longevity.
Longevity is more than 7 techs away, but by gifting up the Scientific civs, I'm hoping to save a tech or two.
Among the four towns not to be abandoned are my 'critical' wonders: Pyramids, Hoover, Smiths, FP, Palace. Three of the four should be maxed out on pop and shields soon so that I can prebuild Longevity and the UN.
I'll be damned if I'm going to risk UN votes...