Help me as much as you can

Hello for the economist David Ricardo please talk about his main contributions to economics (his theories. At least 3/4 theories) .

Note: these are to be well explained and multiple examples given for the class to have a full and in depth understanding. I need at least 6 - 10 slides with little writing about his theories and examples maybe include a short video in one of the slides and then I need a full script that I would review for my 25 minute presentation that I will say in class. Also please include in the slides some activities that makes the class engaged like testing their knowledge and making them physically do something and