<h3><strong>Context API</strong></h3><p>Context API allows you to share data globally across components in your React application without manually passing props through each component level. It simplifies state management for values that need to be accessible throughout the component tree, such as user authentication, themes, or settings.</p><p><strong>How it works:</strong></p><ul><li><strong>React.createContext</strong>: Creates the context.</li><li><strong>Provider</strong>: Makes data available to child components.</li><li><strong>Consumer</strong>: Accesses the provided data.</li></ul><h3><strong>useReducer Hook</strong></h3><p><code>useReducer</code> is used for managing more complex state logic, especially when dealing with multiple values or intricate state transitions. It’s like <code>useState</code>, but instead of setting individual values, you dispatch actions that update the state.</p><p><strong>How it works:</strong></p><ul><li>Takes a reducer function (which updates state based on action type) and an initial state.</li><li>Returns the current state and a dispatch function.</li></ul><h3><strong>Combining Context API and useReducer</strong></h3><p>When building larger apps, you can use the Context API with <code>useReducer</code> for global state management. The Context API provides the global state, while <code>useReducer</code> manages the complex state transitions, providing more maintainable and scalable solutions.</p>