Complex sentence: In March 1970, feminists held an 11-hour sit-in at the "Ladies' Home Journal" s office, which resulted in them getting the opportunity to produce a section of the magazine that August.
Split into simpler sentences: In March 1970, feminists held an 11-hour sit-in at the "Ladies' Home Journal" s office. As a result, they were allowed to produce a section of the magazine that August.