desparate higher history help

hey , could be doing with some help , basically im in sixth year and re-sitting higher history , in 5th year i got an A in my prelim and C in actual exam , although i need a B for uni , but im doing 3 adv highers in maths , english and modern studies , and a higher in psychology , and dont have the time to study history , was wondering if someone could upload some model essays that i could have , would be highly appreciated x