The correct answer to this open question is the following.
You forgot to include your particular historical question, the tips, and the instructions. So although you forgot to include those elements, we can help to comment on the following.
To write a great thesis statement, you have to find one or two powerful statements that could represent the foundation of your work. You can write the main idea of your report. You can have your stand on the subject. Do not forget to be specific and concrete. Another piece of advice would be this. Your statement has to be somewhat controversial. This means that after reading it, your readers would have different opinions about it. If everybody agrees with your statement, it is probably wrong. A good thesis statement invites debate.