Writing an argumentative paper is a challenge for many people, but it is an important skill to learn. What is an argumentative paper? Purdue university’s Online Writing Lab says:
An argumentative paper makes a claim about a topic and justifies this claim with specific evidence. The claim could be an opinion, a policy proposal, an evaluation, a cause-and-effect statement, or an interpretation. The goal of the argumentative paper is to convince the audience that the claim is true based on the evidence provided.
https://owl.english.purdue.edu/owl/resource/545/01
The argumentative paper needs a thoughtful and interesting thesis. Examples of good and bad theses can be found at the U of T online writing help site:
http://www.writing.utoronto.ca/advice/planning-and-organizing/thesis-statements
Building a thesis should start with planning. Use this map to guide you: