Which is the only country who has never been ruled by another nation?
Which is the only football team to win two european cups in a row?
Which is the only mammal in the world unable to burp?
Which is the only mammal with four knees?
Which is the only opera composed by Beethoven?
Which is the only peninsula and sub-continent of the world?
Which is the only South American country that has never qualified for the World Cup?
Which is the operative system used in Samsung mobile phones?
Which is the process of asexual reproduction in wich cells divide?
Which is the river with the most volume of water in the world?
Which is the normal blood preasure?
Which is the second largest country in South America?