Well he already said it
Your Armys and other Units have an Carry Load which they can carry around.
The Maximum amount of Ressources you can Carry at the same time also is the Max Amount of Gold you can Carry
If you carry more Gold than your actual limit allows you will start losing Gold
the further you exceed the limit the faster the Gold Decays
so if your Army can Carry 1000 units of Ressources it can also carry 1000 Gold along with it.
For example you could carry 500 food 500 stone and 1000 Gold
(other Ressources are added together on the limit Gold however while sharing the limit is countet alone)
So no matter how much Gold you have it wont affect the other Ressources
and no matter which or how many other Ressources you have it wont affect the Gold
Worker Units and Carts usually have good Carry Loads so if you want to transport alot of stuff you should add some to your Army
For Humans that are Carts
For Elves it Treants which can carry alot
hmm Orcs had some sort of Raider Unit used for Raids and Pillaging right ? guess those are your choice on them
of course you can also use Mercs
some Carts or Treants are usually cheaply acquired
In the Shadow of the Black Cross. We Fullfill our Duty in your Name.
And Look forward to the Day we Return to your side Silvanos.
Watching over our Comrades as they Fullfill their Duty in your Name.