Context: Antarctica has no indigenous population and there is no evidence that it was seen by humans until the 19th century. However, belief in the existence of a Terra Australis—a vast continent in the far south of the globe to "balance" the northern lands of Europe, Asia and North Africa—had existed since the times of Ptolemy (1st century AD), who suggested the idea to preserve the symmetry of all known landmasses in the world. Even in the late 17th century, after explorers had found that South America and Australia were not part of the fabled "Antarctica", geographers believed that the continent was much larger than its actual size.

Question: When was the first time humans visited Antarctica?
Answer: 19th century

Question: What was Antarctica presumed to be by the ancient thinkers?
Answer: balance

Question: What did Ptolemy suggest that a southern land mass would do to preserve? 
Answer: symmetry

Question: Of what did early explores think Australia and South America were part?
Answer: Antarctica

Question: Early geographers thought that Antarctica was what in size?
Answer: larger

Question: When was Antarctica last seen by humans?
Answer: Unanswerable

Question: What is the vast continent in the far north?
Answer: Unanswerable

Question: Who suggested the idea of Terrs Australis in the 1st cuntury B.C.?
Answer: Unanswerable

Question: What was discovered in the 1700's?
Answer: Unanswerable

Question: Who believed thet Antarctica was smaller then its actual size?
Answer: Unanswerable

Question: What continent has an indigenous population that arrived in the 19th century?
Answer: Unanswerable

Question: What is Australis Terra?
Answer: Unanswerable

Question: Who suggested Australis Terra?
Answer: Unanswerable