I need help for a World History I project? Anyone care to help?

My teacher just assigned the class a project that's due in like a month in which we have to make a news broadcast about an event that we have studied this year. We studied: the Muslim Empire, the Black Death, Feudal Japan, Ancient China, Medieval Europe, the South American civilizations, the African empire, the voyages of Columbus and such explorers to the Americas and India. I can't think of anything to do and how to do it... So I need ideas bad... so if you'd please help me.. :D And I'm wokin' alone, btw. Send me messages if you've got any suggestions or advice. :D