Event Guide
In the first Golden Sun, you could do a number of events that would trigger further events in Golden Sun: The Lost Age. This requires you to input a password in The Lost Age, that carries over data from the first game. There are three password levels.
Bronze - Transfers character names, levels, Djinn, utility Psynergy items including Orb of Force, and event statuses.
Silver - Transfers above, plus character stats.
Gold - Transfers above, plus coins and inventories.
The events that happen in The Lost Age are explained in the links below, with accompanying screencaps.