since world war II, thw united states and other nations have been working to achieve peace between what two groups of people

The two groups of people that the United States and other nations have been working to achieve peace between since World War II are Israelis and Palestinians. The Israeli-Palestinian conflict has been a longstanding and complex issue, with both sides laying claim to the land of Palestine. Efforts to bring about peace have included negotiations, peace talks, and diplomatic initiatives aimed at finding a two-state solution that addresses the concerns and aspirations of both Israelis and Palestinians.