The Gits are absolutely right.
The only thing they forget to mention is that when you expand, expand and, again, expand, you will need micromanagement and you usually end up with a lot of small villages and two or three big cities (it depends on your desire of micromanagement
).
This is why I often build a max of 20 cities (
, lazy boy!) fully improved, instead of the 123,450 ICSers usually have.
But it's only a matter of style, currently I'm playing a archipelago huge map game and, surprise, I have built more than 30 cities on different islands.
And I trade all my caravans towards RHODES, that's usually my SSC, which is on a small island...
I've been using three moves triremes for the most part of the gambe
, now galleons and transport ("Magellaned" of course) make the things a lot easier.
One turn=15 minutes is quite too much for me, of course if I have only to move camels and ships....