The research that has been conducted is entitled "The Effect of Debate Method Application in History Subjects on Critical Thinking Ability of Grade XI Students at “UPTD SMAN 1 Sungailiat". This research uses experimental research methods using 2 classes as research samples. This research was conducted on January 30 - February 27, 2023 with the research location at UPTD SMAN 1 Sungailiat using…