Please give me ideas for the topics of a 3000 words research/thesis essay
Go to http://www.google.com and enter topics for research paper -- and several further suggestions will come up -- for history, for science, etc. Choose different areas to look through until you find something that interests you.
Make sure it interests you and that you have an opinion about the topic. That opinion is your stance, your position. You have to have a position in order to have a thesis.