- reduction made to trade upgrade costs are now restored to the original prices (1000,2500,7500,15000,30000)

- persian civ bonus = trade carts now cost 100 wood 50 gold (-100 wood)

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now players will be inclined to create trade carts so that not everyone is making trade cogs

- trade cart creation speed increased to match trade cogs

- spanish team bonus removed

- trade unit production slightly increased (only enough to make the former spanish team bonus passive for all civs, even without spanish in the game, all trade units still produce 70g, just as before)

- trade unit and villager size radius reduced to minimize unit collision (their visual graphic is still the same size)

- adjusted persian, viking, and spanish civilization descriptions in tech tree