Original sentence: The Sinai Peninsula was returned to Egypt beginning in 1979 under the Israel-Egypt Peace Treaty following the 1978 Camp David Accords
Edited sentence: The Sinai Peninsula was returned to Egypt beginning in 1979 under the Israel-Egypt Peace Treaty following the 1978 Camp David Accords which was the result of the Egyptian Victory in the Yom Kippur War/6 October War, which led to negotiations with Israel