Did they have windmills?
Probably not, but then again, I would not be surprised if one turned up in the archeological evidence- Conventionally, windmills are considered a Central Asian invention and dated to sometime before 1000.
Did they have windmills?
Horse railroads (wagonways) seem interesting. What's the history of the flange? That seems necessary.
Also, I've read that the Romans weren't into the kind of invention we were, I mean, culturally speaking. They could innovate yes, but they didn't prize technological progress the way our civilization does so things might be quite a bit slower.
They are a step on the road...
The Romans had trains already, all they need is to make a leap, it happened OTL, why not earlier?
I agree with previous posters about the need for mathmatics...
... and blast furnaces, but why not?
Carlton,
The Indians had the zero, and even the beginnings of calculus, but what they didn't have was engineering on the scale (or of the complexity) that the Romans had. The Romans were practical engineers, and were particularly talented in hydraulic engineering, which would have made the effective development of steam engines over time virtually certain, whereas the Indians never really pursued that branch of technical development.
As for the use of steam engines, pumping water out of mines (mentioned by one of the other posters) is precisely where it would begin, and the Romans did a VERY significant amount of mining (tin, silver, gold of course, etc.) where such an innovation would be very attractive. Calculus would have been critical here, as it would have given engineers the basis for designing (and scaling) new engines, something that simply wasn't feasible without it.
As for smallholders, I believe that you might have missed my point. Steam engines would permit water pumping (irrigation anyone?), even primitive prime movers, something that smallholders would find fantastically valuable, yet would not offer similar benefits to the wealthy landowners, who were already heavily invested in slaves. Rail lines (a bit of a reach, to be sure) would have broken the monoply of the grain factors quite effectively, further enhancing the fortunes of the smallholders, and making possible long range transport of specialty crops and luxuries that could have also helped 'level the playing field'.
The capital investment for early steam engines was not excessive, and might have been lower still if metals were cheaper, which would have likely been an early effect of steam adoption by mines. This would have left such things within the reach of the smallholders, though in fairness, not without some barriers.
A lack of trees?
Wasn't it that that forced the British to turn to coal and charcoal for smelting?
Couple of things: the Printing Press may have been invented later, but the techniques needed to invent it were already around (IIRC). Furthermore, the printing press had an immediate impact on history, unlike gunpowder, which was around for several centuries before it became in anyway useful beyond entertainment.
And the age of knights would have ended with or without gunpowder, there were social causes behind it as well as military, and the crossbow was probably just as deadly as gunpowder.
Yes, either Persian or Afghan pick your poison. (I only mean the denizens of whichever country you don't pick will malign you.)Probably not, but then again, I would not be surprised if one turned up in the archeological evidence- Conventionally, windmills are considered a Central Asian invention and dated to sometime before 1000.