Cardinal Robert Prevost has been elected pope and will be known as Pope Leo XIV. The 69-year-old is the first American to become a pontiff and will lead members of the Catholic Church's global community of 1.4bn people. Born in Chicago, he is seen as a reformer and worked for many years as a missionary in Peru before being made an archbishop there. He also has Peruvian nationality and is fondly remembered as a figure who worked with marginalised communities and helped build bridges in the local Church. Why do popes choose different names? One of the first acts of...