This powerpoint reviews all the major governments in existence, including a definition, along with separate slides for the pros and cons of each type.
The governments addressed include: dictatorship, monarchy, representative democracy, and direct democracy.
This powerpoint uses some graphics and real world photographs to draw students' attention; however, it is more texty and somewhat less visual than my other powerpoints which are all very, very heavily visual.
I used this with my 7th grader