Assuming your file is calld Persia.SAV and was uploaded last night it is at
http://www.civfanatics.net/uploads6/Persia.SAV
I have had a quick look at this file. Your comment indicates that you might be hoping for a histographic victory, but I've looked at all your victory options:
1. Histographic: No chance. You are second right now but living on faded glory. America and Germany are both increasing their scores much faster than you. In any case the game won't go on long enough, as before 2050 one of them will launch a space ship or build the UN unless you do something about it.
2. Cultural: Not an option. Persepolis is at 10K now and would need 200 more turns to reach 20K. Your total culture is 33K. I haven't done the sums, but I doubt if it can get to 100K and twice that of the AIs.
3. Diplomatic: Possible. You are third in population, so you can only be certain to be a candidate in a UN election if you build the UN yourself. The Aztecs are currently furious with you so I assume you've been upsetting them - surprising since you only have 4 ships. They are also at war with the other two, so they might abstain. The other two are Gracious, but America would be your rival in the election. If the Aztecs are alive and don't vote for you then you can't get more than 50% of the votes. You could try eliminating the Aztecs, building the UN and hoping for Germany to vote for you.
4. Spaceship: Possible. America and Germany are both ahead of you in techs, but you have a fast research rate. Unfortunately you've let Abe get the drop on you with Theory of Evolution, which would have been a great opportunity to catch up and overtake. Without that, and with a reputation problem that stymies your ability to buy techs for gpt you have a problem. I think you are going to have trouble catching them now.
5. Military: Not likely. Your military strength is low relative to America and Germany, your army is mainly defensive units, and you have no naval capability, so defeating either of them is a tall order from where you stand now. You would need to take most of one of them, plus the Aztecs, to reach 2/3 of land area, and you might still be struggling to reach 2/3 population.
Diplomatic or space victories are the only slim possibilities I can see, and both are unlikely given your tech disadvantage. Your best hope is to find a way to get to the Modern era in time to get your free tech before they research it. Then you may be able to trade with them. The trouble with that idea is that the Germans will also get a freebie, probably the same one, reducing your advantage.
Some general points:
Your civ is generally well developed and productive, and you have managed to keep up with the AI pretty well, but I would suggest the following as food for thought for this and future games:
- Histographic victory is not generally an option at Regent or above, and certainly not when there are scientific civs involved, unless you take specific steps to stunt AI development.
- Just keeping up with the AI is not enough to win. By this stage in the game you should really be moving ahead of them along your chosen route to victory. So first choose your route, then focus all your decisions on moving along it as fast as possible.
- You could use more workers. You only have 11 home-grown workers and 9 guests for over 30 cities. This means you take a long time to develop your land, build your rail network and clear pollution, even with the industrious trait of the Persians.
- Your cities were spaced a long way apart for the first half of the game. Your settlers had to walk miles to build your early cities, they couldn't provide mutual defence and you only had half the cities you could have built in the original space you had available. That must have slowed down your early development rate. Later on you inherit cities with wider spacings as you capture them from the AI, but your early core only needs three or four tiles between cities.
- You are building city improvements you don't need. Cathedrals and colusseums are of marginal value unless you are specifically targeting a cultural victory. Sure they make happy faces, but you could achieve that with extra luxury acquisition. On the other hand you could build Courthouses in some of your semi-corrupt cities to improve their performance.
- Having spaced out your cities to allow growth to 20 citizens you are not letting it happen everywhere. Pasagardae is an example of a city that is producing more food than it needs at size 12. It should have more mined tiles, or else it should have a Hospital to enable it to grow further. Increased population will produce more gold and more workers, giving more research and more options.
- At some point you have trashed your reputation by walking out on a 20 turn deal. No-one will give you a one-time tech or cash for a 20-turn alliance or lux or gpt deal. You need to think about how that happened and try to avoid it in future, as it puts a severe crimp into your trading options. Your reputation can be destroyed by any premature termination of a 20 turn alliance or trade deal, and this is typically done by accident.