The directions says "At least 10 supporting details go beyond Main Events" does that mean at least 10 facts altogether in the essay or 10 supporting details in each paragraph?
Usually "supporting details" refers to the supporting facts for each paragraph, but I can't imagine writing a paper like that! Perhaps what is meant is ten supporting details for the thesis statement, arranged in paragraphs with about 3 for each of 3 topic sentences that will form the internal paragraphs.
When the directions state "At least 10 supporting details go beyond Main Events," it means that you need to include a minimum of 10 supporting details in your entire essay, rather than in each paragraph. Supporting details are pieces of evidence, examples, or explanations that help to develop and support the main events or main ideas.
To meet this requirement, you should aim to include a variety of supporting details throughout your essay. These can come from various sources such as personal experiences, research, or observations. Remember that the purpose of supporting details is to provide evidence and add depth to your main ideas or arguments. So make sure that each supporting detail directly supports and reinforces the main events mentioned in your essay.
To keep track of your supporting details, it might be helpful to create an outline before writing the essay. This way, you can organize your main events and plan out the supporting details that will strengthen and expand upon them. This will also ensure that you meet the requirement of including at least 10 supporting details that go beyond the main events.