how is the catholic church one

The Catholic Church is considered "one" in several ways:

1. One in Doctrine: The Catholic Church maintains a consistent set of beliefs and teachings across the globe. This unity in doctrine is based on the teachings of Jesus Christ as handed down through the Apostles and their successors.

2. One in Worship: Catholics all over the world participate in the same sacraments, most notably the Eucharist, which is a sign of unity. The liturgy, although celebrated in many languages, follows the same basic structure worldwide.

3. One in Leadership: The Catholic Church is united under the leadership of the Pope, the Bishop of Rome, who is considered the successor of Saint Peter. Bishops around the world are in communion with the Pope.

4. One in Charity: The Catholic Church operates as a single entity in terms of its charitable works. It runs hospitals, schools, and various social service agencies around the world.

5. One in Communion of Saints: The Catholic Church believes in the communion of saints — everyone who is part of the Church, whether in heaven, in purgatory, or on earth, are united as one.

These are the ways in which the Catholic Church is considered "one".