The answer is both yes and no. On one hand, Bootstrap is a popular open-source front-end framework that makes it simpler to create responsive web designs. It has a variety of components, plugins, and options that make designing websites quicker and easier. On the other hand, React can be used without Bootstrap. React is built to be independent of any library, framework, or platform, so it can be used without Bootstrap.
So, why use Bootstrap with React? Bootstrap offers developers a wide range of components and options that can be used to create exclusive and highly interactive user interfaces. It also makes it easier to create responsive and mobile-friendly designs. Moreover, Bootstrap is well-documented, which means that developers can quickly and easily find the information they need to build their projects.