Final answer:
Carter's most successful accomplishment in foreign affairs was the Camp David Accords.
Step-by-step explanation:
Jimmy Carter's most successful accomplishment in foreign affairs was the Camp David Accords. The Camp David Accords were signed in 1978 and were an important milestone in achieving peace between Egypt and Israel. Carter played a crucial role in brokering the agreement, which led to the first peace treaty between Israel and an Arab nation.
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