How do you install Third age Total war?

To install Third Age: Total War, first ensure you have a legal copy of Medieval II: Total War and its Kingdoms expansion. Download the Third Age: Total War mod from the official website or a trusted source. Extract the downloaded files to the "mods" folder within your Medieval II directory, and then launch the game using the Third Age: Total War shortcut. Finally, select the mod from the game launcher to start playing.