Who was appointed as the US Ambassador to the United Nations after serving as mayor of Atlanta?

The correct answer is Andrew Young, who served as the US Ambassador to the United Nations after his tenure as the mayor of Atlanta. Young's appointment as ambassador came in 1977, during the presidency of Jimmy Carter. His role at the UN was significant, as he worked towards promoting human rights and engaging in international diplomacy, reflecting his commitment to social justice and equity.

Young's previous experience as a civil rights leader and as mayor equipped him with the necessary skills and perspectives for this global position. His emphasis on diplomacy and fostering relationships between nations aligned with the UN's mission of cooperation and peacebuilding. This appointment marked a key moment in American diplomatic history, showcasing the inclusion of diverse voices in leadership roles.

The other individuals listed did not hold the position of US Ambassador to the United Nations following their service as mayor. Therefore, Andrew Young stands out as the only correct choice based on his notable contributions and the position he held.