How should I structure my IB History essay?

In order to cover all the marking criteria to the best of your ability, whilst making sure that you will be able to create out an easy to follow study plan (based on your main arguments, but more on that in a minute), you have to have an essay structure. I would suggest the following: an introduction, 3 body paragraphs and a conclusion. Each body paragraph will focus on a different argument of yours, meaning you will have 3 main arguments in total. It is very important to include those arguments in your thesis (which will be in your introduction), using one or two words for each, so your introduction is short and to the point. It is also important to remember that each paragraph must be linked to the one that comes before it and the one that comes after it, so the reader (most likely the examiner in this case) understands how all of your points connect to the main argument you are making in your thesis.
Now, it is also very important to remember that a good essay does not rely solely on a good structure (even though structure is a rubric in the marking criteria), because there must be historiography and analysis - this is why picking 3 main points to support your argument is key, as you will make studying easier, by choosing 3 events/individuals/facts etc. to focus on and any historiography and analysis you can go into relating to them.