The inauguration of Pope Leo XIV, the first US Pope, will take place this Sunday, marking the end of Pope Francis' pontificate. Leo XIV's background in mathematics and law has sparked interest in how he might influence the Catholic Church's role in the economy. His name choice reflects a desire to address social issues, inspired by Pope Leo XIII's encyclical Rerum Novarum. Observers hope Leo XIV will bring doctrinal order and tackle modern economic challenges, including the impact of artificial intelligence. His election has also raised hopes for revitalizing the Vatican's finances.