This document discusses different types of constitutions and constitutional principles. It outlines three main types of constitutions: absolutist, legislative supremacy, and higher law constitutions. It also discusses key characteristics of successful constitutions, including being definite, comprehensive, brief, durable, protecting fundamental rights, and being suitable for the nation. The document then covers the US Constitution, outlining debates between the Virginia and New Jersey plans and the compromise that created a bicameral legislature. It also discusses centralized vs decentralized constitutional review. Finally, it analyzes the positive and negative aspects of federalism using examples from Nigeria and India.