Some think it's okay to end an introduction right after you write your thesis. However, in some cases, it could look very abrupt if you end it like that.
Writers, contented with a one-sentence claim, often defend it to the death, warping data from primary and secondary sources to fit the thesis.
How to Write an Essay Under Exam Conditions | History Today
That's why we want to help you with that, offering this guide. It would help you understand how to write an essay introduction, how to write an introduction for a lab report, how to write an introduction for a research paper, and so on. Because in reality introductions don't differ too much - and aren't as challenging to write as you might think.