Reform Judaism, also known as Liberal or Progressive Judaism, is the largest Jewish denomination in the United States. It originated in 19th-century Germany and emphasizes the evolving nature of Judaism, prioritizing ethical principles and social justice over ceremonial rituals. The movement views Jewish law as non-binding and grants autonomy to individual Jews in observance, integrating progressive values with openness to external influences. Reform Judaism often clashes with more traditional Orthodox approaches, including outreach efforts by organizations like Aish.com. In North America, it is primarily represented by the Union for Reform Judaism (URJ), founded in 1873 by Rabbi Isaac Mayer Wise, which supports over 850 congregations and serves more than 1.5 million Reform Jews. The movement has spread globally to countries like the UK, Australia, and South Africa, and continues to evolve by addressing contemporary issues such as interfaith families and LGBTQ+ inclusion while maintaining a commitment to tikkun olam (repairing the world).