Constitutional designs refer to the frameworks and structures established in a constitution that outline how a government operates. These designs include the distribution of powers among different branches, such as the executive, legislative, and judicial branches, as well as the relationship between the national and state governments. Different countries adopt various constitutional designs based on their unique historical, cultural, and social contexts. For example, some nations may have a federal system that allows for shared power between central and regional authorities, while others may follow a unitary system where most power is concentrated at the national level.