I got a 9 in history ( 94%) and the only common topic we have is weimar Germany which is tested very differently to the other exams because all but one questions involves the use of sources. For the other history topics, my general advise would be to learn your facts and dates but focus on your essay writing techniques cuz that's where the marks are. Try also learning unique facts/figures/dates that you haven't been taught in lessons as it'd make you stand out to examiners. Pm me if need help with weimar Germany.