Final answer:
President Jimmy Carter's most spectacular foreign-policy achievement was the Camp David Accords of September 1978. These led to a historical peace treaty between Egypt and Israel in 1979 marking an important step towards peace in the Middle East.
Step-by-step explanation:
President Jimmy Carter's most spectacular foreign-policy achievement was the Camp David Accords in September 1978. This monumental accomplishment marked a change in how the United States conducted its foreign relations. Carter invited Israeli prime minister Menachem Begin and Egyptian president Anwar Sadat to the United States for discussions on peace between their countries. The meetings, held at Camp David, the presidential retreat in Maryland, resulted in the signing of the Accords, leading to a historic peace treaty between Egypt and Israel in 1979. This marked a significant stride for peace in the Middle East.
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