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  Here is a step-by-step guide on how to create a Redux store in ReactJS: Install the Redux and React Redux packages using npm or yarn. Copy code // Using npm npm install redux react-redux // Using yarn yarn add redux react-redux Create a new file called store.js and import the createStore and applyMiddleware functions from the Redux package. Copy code import { createStore, applyMiddleware } from 'redux' ; Define a reducer function that takes the current state of the application and an action, and returns the new state. The reducer function should handle all of the possible actions that can be performed in your application. Copy code const reducer = (state, action) => { switch (action. type ) { case 'INCREMENT' : return { ...state, counter: state.counter + 1 }; case 'DECREMENT' : return { ...state, counter: state.counter - 1 }; default : return state; } }; Create the Redux store by calling the createStore f