Trade (yield) (Civ2)

Trade is a yield in Civilization II that is converted into Science, Luxuries, and Gold.

Factors that influence trade

•  Superhighways - increase the trade arrows produced on all tiles with roads or railroads within a City's radius by 50%.
• Roads - Increase Trade on Deserts, Plains, and Grasslands
• Trade routes
• The governments Democracies and Republics gain trade bonuses
• The Colossus adds +1 trade in any square that already is producing trade in that city.

Corruption

Main article: Corruption (Civ2)

 Corruption Depending on a player's government and the city's distance from a player's capital, corruption may take away trade points a city may have produced.

Civilopedia entry

Trade represents more than just the exchange of goods and cash between cities and civilizations. Trade also represents the exchange of knowledge and ideas, and the recreational travel and activities of the citizens of your civilization. The total amount of Trade produced by each city is represented by double-arrow icons displayed in the Resource Chart of the City Display. Trade is then broken down into three separate components: Taxes, Luxuries, and Science. The amount of Trade allocated to each of these areas is controlled by selecting the "Change Tax Rate" option on the Kingdom menu.

Trade can be increased through the construction of certain City Improvements and Wonders of the World. It can also be increased through terrain improvements, and through the establishment of trade routes.