In order to write an essay comparing and contrasting the Unoited States and Canadsa you need to focus on a specific area of comparison. Since you cannot possibly cover all the similarities and differences between the two countries, in order to plan out an essay, try to think of a significant area in which the two countries differ. For example, you might focus on politics and examine the differences between the parliamentary system in Canada and the Presidential system in the United States, and discuss the how parliamentary political systems lead to multi-party systems. Another possibility would be to compare and contrast the socialized single-payer Canadian system of medicine with the private system in the United States, trying to understand why Canadian health outcomes are so much better than United States ones despite lower Canadian per capita costs. Another possible topic would be a comparison of the Canadian Charter of Rights and Freedoms and the U.S. Bill of Rights.