Make a .txt document.
Copy over the bonuses, and for the tech tree, use a series of “X”s and “O”s in the shape of the tech tree to indicate which techs the civ has.
E.G:
Burgundians:
Economic upgrades cost -40% food and are available one Age earlier than other civilizations.
Stable technologies are 50% cheaper.
Gunpowder units gain a +25% bonus to their attack.
Cavalier upgrade available in the Castle Age.
Team bonus: Relics generate both gold and food at the same rate.
Unique units
Coustillier (a cavalry unit that can charge its attacks)
Flemish Militia (heavy infantry unit with a bonus vs cavalry; can only be obtained via the Flemish Revolution technology)
Unique technologies
Burgundian Vineyards (farmers slowly produce gold)
Flemish Revolution (transforms player’s Villagers into Flemish Militia; Flemish Militia becomes trainable at the Town Center)
Archery Range: OOX-OOO-/OX-/XX-/XX
Barracks: OOOOO-OOO-XXX-XO-/O
And so on.