How do import tariffs affect trade?

Aim of this essay is to critically review and apply relevant trade theories using real world cases and/or data. A minimum of 10 references should be used and listed. Data sources should also be referenced using Harvard style. Ensure you use relevant quantitative evidence and correctly represent statistical data in order to show relationships between theory and the real life applications. Note: all data analysis must be original. That is, you must collect data yourself and analyse the data and produce results (figures or tables) using statistical packages (EXCEL, SPSS, Eviews, Stata etc.). Figures or tables copied directly from any existing sources as screenshots are not acceptable. Relevant models/theories to discuss are: – IRS Model – Comparative Advantage – Keynesian Model These theories/models could be ideally discussed when answering the essay question. I have attached an outstanding exemplar essay. This is the level of the sort of work I want produced.