Find the best way to link evidence to illustrate your argument. Consider conflicting evidence and historians' ideas. Weigh these up to justify your opinion. Be confident and persuasive and able to cite evidence. It's important to be specific, so practise writing paragraphs during the year, naming people, events and ideas, in context.
History involves constant debate because it is open to many interpretations.
It is often used to control and influence modern thinking. Historical interpretation affects our present and our future. There are also revisionist historians who re-interpret the old views, feminist historians who feature women's lives and achievements, and social historians who see history from the bottom up rather than the top down. This list is not exhaustive. Sometimes, evidence that has disappeared or been ignored or suppressed can be very revealing.