I think the answer is (D.)
Answer:
A. To protect the rights of individuals
Herbert Clark Hoover (August 10, 1874 – October 20, 1964) was an American engineer, businessman, and politician who served as the 31st president of the United States from 1929 to 1933. A member of the Republican Party, he held office during the onset of the Great Depression.
They did a trading chain and traded items