If it is about the content of the syllabus for History of the Americas, it mainly revolves around three topics - the civil rights movement, political development in Latin America and Cold War on the Americas. The countries shown below may change according to what your teacher chooses.
The Civil Rights Movement: Investigation of the African American movement (US), Youth movement (US, Canada), Women movement (US, Canada), Indigenous movement (US, Canada) and Hispanic movement (US). You would look into the origins, development, impacts, key figures and events and extent of success and failure for all these movements.
Political Development in Latin America: Investigating the Cuban Revolution, Cuban Dictatorship, Democracy in Crisis, Liberation Theology, Populist Leaders etc etc. There are many sub-topics in this section. You would mainly do the same things as before - origins, development, results.
Cold War on the Americas - It would help a lot if you did/are doing Cold War for Paper 2. You basically examine the effects (economic, political, social, cultural) of the Cold War on countries in the Americas.