Ah, very interesting topic...if I were ruler I would-
1. (like you said) Deffinatly stop world hunger. It makes me very sad whenever I hear on the news that people went hungry or are dieing of starvation.
2. Put more animal shelters up. Oh my gosh! It makes me cry whenever I hear on tv of animals being put to sleep just because they ran out of room in animal shelters!
3. I would deffinatly try to stop war. I hate to hear how many people died in wars, little kids and woman dieing, I just want to put a stop to all of that.