Collapse of Rome (2:40); Capturing the Empress of Rome (2:51); Roman Power Vacuum (2:03); Mahd adh-Dhahab Mine (3:08); Islamic Empire (2:24); Cordoba Scholarship (4:02); Meeting Savages (2:59); Viking Funeral (3:44); Viking Empire (3:50); Easter Island (2:47); Moai Statues (3:33); Crusades (1:45); Holy War (3:37); Power of Religious Belief (3:31);