In game press CTRL+SHIFT+S to bring up the game settings menu. Enter cheats onto the dialogue box of that window. First, type " cheat allowcheats" (no quotation marks) and press enter to enable cheats.

Code	Effect
Adds $10 billion to treasury	cheat georgew
All units set to be constructed will be completed the next day However, this also applies to the AI and can slow down the game.	cheat onedaybuild
Allows you to build any unit, even if you haven't researched it	cheat allunit
Causes research to be completed in one day. Espionage succes rates increase as well	cheat e=mc2
Decreases your country's relationship with the UN to minimum level	cheat shelovesmenot
Enables Cheats	cheat allowcheats
Increases your country's relationship with the UN to max level	cheat shelovesme
Instant contruction of facilities	cheat breakground
Makes you instantly win the game	cheat instantwin
Prevents the computer from doing some daily calculations (such as "spotting"). Using this cheat will increase game speed	cheat endday
Prevents units from moving	cheat nomove
Random AI country will declare war on the player	cheat saddame