The Church of South India (CSI) is a united Protestant church formed in 1947, bringing together various denominations, including the Anglican, Methodist, Presbyterian, and Congregational churches. It serves as a significant Christian community in southern India, promoting ecumenism and cooperation among different Christian traditions. CSI operates through dioceses across several states, providing spiritual guidance, education, and social services. The church emphasizes community development and social justice, aiming to address issues like poverty and education. Its diverse membership reflects the multicultural fabric of India, fostering unity in faith and service.