How do you analyze a political cartoon?

This picture represents how America was conquering small islands in the Caribbean. The man with the ax is a representation of  the Filipinos. He's trying to chop down the American flag which represents how they fought for their independence against the Americans.

In this picture Uncle Sam is the teacher and there are four new students. One is from Cuba, another from Puerto Rico, one from Hawaii, and the last one if from the Philippines. This represents how America was trying  to assimilate the territories that they conquered to seem like America. 

This picture is a representation of America, represented by Uncle Sam, decided what to do with the Pgilippines. In the back their is a Cuban man waving his flag because Cuba had just gained their independence.