Simplify the following text for a Grade 4 native English-speaking person.
Original: The first humans to reach the Geographic South Pole were Norwegian Roald Amundsen and his party on December 14 , 1911 .
Simplified: The first men to reach the South Pole were a group from Norway led by Roald Amundsen . They arrived at the Pole on December 14 , 1911 and left the Norwegian flag .