Based on the clue '1 of the 2 harriets in the womens hall of fame the...', what is the answer?

Based on the clue '1 of the 2 great australian deserts', what is the answer? What is associated with: 1 of the 2 great diamond corporations formed in the 1880s in south africa? Based on the clue '1 of the 2 gulfs branching from the north end of t...', what is the answer? Based on the clue '1 of the 2 gulfs which border the sinai peninsula', what is the answer? What is associated with: 1 of the 2 in 1558? What is associated with: 1 of the 2 in 1760? What is associated with: 1 of the 2 in 1901? Based on the clue '1 of the 2 islands with a population exceeding 100...', what is the answer?