Man-made disasters occur for a number of reasons and you should take notice of the reports. For example, if you have a large number of troops without the resources to feed them, this could lead to a mutiny.
You can get more resources immediately by plundering other cities.
Food can also be bought during times of crisis on the resource information screen or at the Market.
You can get more resources immediately by plundering other cities.
Food can also be bought during times of crisis on the resource information screen or at the Market.