Answer : 1. "Robert Peary"
Explanation :

Robert Peary (1856-1920) was an American explorer and US Navy officer who made several expeditions to the Arctic in the late 19th and early 20th centuries.

He is best known for claiming to have reached the geographic North Pole with his expedition on April 6, 1909.

He made his first trip to the interior of Greenland in 1886. In 1891, Henson, a young African American sailor, joined him on his second arctic expedition.

Their team made an extended dogsled journey to the northeast of Greenland and explored what became known as “Peary Land.”

In 1893, the explorers began working toward the North Pole, and in 1906, during their second attempt, they nearly reached latitude 88 degrees north–only 150 miles from their objective.

In 1908, the pair travelled to Ellesmere Island by ship and in 1909 raced across hundreds of miles of ice to reach what they calculated as latitude 90 degrees north on April 6, 1909.