Use your outline to draft your essay. You must add commentary and analysis.
Remember, the most common mistake regarding this essay is writing a biography or report instead of an analysis of the long and short-term impacts of your assigned individual/group/event. In order to avoid this common mistake, include all relevant background information in the Introduction. This means that your Introduction might be quite lengthy in order to logically lead to a well-developed thesis statement. Also, remember that when writing a history research paper, a snappy start is not necessary and is often quite distracting. It may be preferable not to begin your Introduction with a quote unless you are absolutely certain that you have a relevant quote that sums up the essence of your paper (like in the Sample Student Paper). Otherwise, just begin with background information.
Also, consider your audience - your teacher. You should be using formal academic language to write your paper. For help in using this sophisticated vocabulary, see the Academic Language Guide.