Thanks for the answer.
I'll skip corporations this time. I don't have enough experience with them and I suddenly wanted some fun while learning, but it really seems SP is more adequate for quick spreading around the world.
P.S. Three more questions, one older then Earth
:
1) Environmentalism, what is it good for? It looks good, but other civics look even better.
2) There are lot of buildings which provide engineer slots in late game (in which I'm less experienced): Industrial park, factories, assembly plants, ironworks... and some wonders help... Does anybody use "engineer strategy" efficiently? How do you generate needed GE (for Mining Inc, wonders, or whatever) while still focusing your strategy on GSs? Early with forge, pyramids, or...? Or later? Beside GPP what is use of engineers at all? Can they convert grassland cities to production powerhouses? Or? Simply, do you use / switch to them heavily and how do you use them?
3) How to help those one-tile-city-islands (if you are not Dutch or Egyptian)? Do you leave them without hammers? Do you build Moai statues
? Whip Forge? Temple? Build Angkor Wat? Use citizen?