Karol Wojtyła was born and raised in Poland during a period of Nazi occupation and later Communist rule. He studied at Jagiellonian University and continued his studies secretly during World War II to avoid deportation. He was ordained as a priest in 1946 and taught Catholicism while promoting religious freedom under the oppressive Soviet regime. He became a bishop and later Archbishop of Kraków and a cardinal. In 1978, he was elected as Pope John Paul II, becoming the first non-Italian Pope in 455 years. As Pope for over 20 years, he traveled extensively in an effort to promote religious understanding and non-violent revolution against oppressive regimes.