Analyzing the sourcing of documents using HIPP, HAPP, or CAPP, is one of the most important skills for AP History. Students improve this skill with modeling and practice. Analyzing sources for the Age of Revolutions is one way to practice. These Revolutions happened within the context of global empires and exchanges and were influenced by the Enlightenment. These revolutions also produced important political ideologies including liberalism, conservatism, feminism, and nationalism.