The first 100 turns - this is how to spend them:
Change to democracy, 25% taxes.
Spend 46 turns building construction sites! Change to Communism with 33% taxes.
Sell your 100 troops on purchase. Change your production to 100% spies.
Fill up your acres with only industrials and enough farms to stay in the +.
Note the building rule on
build 8 Construction sites(CS's) (8 turns)
build 18 industrial sites (2 turns)
build 9 industrial sites (1 turn)
sell spies (in purchase menu)
build 4 CS (4 turns)
build 8 CS (8 turns)
sell spies
build 36 industrial sites (3 turns)
build 8 CS sites (8 turns)
build 8 CS (8 turns)
sell spies
explore (5 turns)
build 72 industrial sites (4 turns)
build 18 farms (1 turn)
sell spies
build 18 industrial sites (1 turn)
explore (5 turns)
this takes you to about turn 50 or so... change production to 70% turrets and 30% spies. Continue to explore for 5 turns and then build untill that land is gone, selling spies when you need the cash. at turn 85-90 change production to 90% turrets and 10% spies... this will give you plenty of turrets coming out of protection and will also allow you to sell one third of them at the end of the day to have cash around... allowing you to keep your spies from this point on.