What happens when the Alliance Leader becomes Inactive?
After 31 days of inactivity, the Leader of the Alliance will be automatically demoted. The most active Co-Leader will then be automatically promoted to Alliance Leader. If there are not any Co-Leaders, then the most active Ally will be automatically promoted to Leader.

How is the most active Co-Leader or Ally decided?
A formula is used to decide which player is the most active; last time logged in and troop donations are taken into account when automatically promoting an alliance member to leader.

Will the rest of the Alliance be notified when this change occurs?
Yes, the entire alliance will be notified of the change via an inbox message.