Simplify the following text for a Grade 11 native English-speaking person.
Original: This discovery led Dalrymple to publish the Historical Collection of the Several Voyages and Discoveries in the South Pacific Ocean in 1770-1771 , which aroused widespread interest in his claim of the existence of an unknown continent .
Simplified: Dalrymple wrote a book , the Historical Collection of the Several Voyages and Discoveries in the South Pacific Ocean in 1770-1771 .