In many development country's many children can't go to school because every day they spend hours walking for water.Since this is often a task for children. So if there would be clean water nearby, the children could go to school.
An illustration of the value of collective action and solidarity in a successful revolution.
(Note to our American readers: this cartoon requires an understanding of basic scientific principles. If in doubt, consult a high-school science teacher -- if he or she isn't busy pushing creationism in class.)