Online communities contribute to global knowledge sharing by providing platforms where individuals can exchange ideas and expertise across borders. Through forums, social media, and collaborative projects, users can access diverse perspectives and information that enrich their understanding. These communities foster innovation by promoting the free flow of ideas and encouraging collaborative problem-solving. Furthermore, they often enable niche interests to thrive, allowing individuals to connect with others who share their passions. By facilitating cross-cultural interactions, online communities play a critical role in democratizing access to knowledge and driving collective learning.