Original sentence: As a result of the electoral fraud, the April Revolution took place in April 1960.In April 28, 1960, in an annex of Rhee's mansion, Lee Ki-poong's first son, Lee Kang-seok (1937 – April 28, 1960) shot Lee Ki-poong and his family and then killed himself in a suicide pact.Lee Ki-poong's family also resigned.Liberal Party(including Syngman Rhee and Lee Ki-poong) has electoral fraud.President Rhee resigned in April 26, 1960
Edited sentence: In April 28, 1960, in an annex of Rhee's mansion, Lee Ki-poong's first son, Lee Kang-seok (1937 – April 28, 1960) to save face shot his family and himself.Lee Ki-poong's also resigned.Rhee resigned because he was a strong advocate of American democracy: if the very people who elected him into power did not want him anymore what legitimacy did his administration have to continue governing.Rhee resigned on April 26, 1960.The April Revolution instigated by Kim Il-sung loyalists sparked a national outcry against police brutality forcing Rhee and Lee Ki-poong to resign