Nataliia Tsyhan, 411 Religion in the United States is remarkable in its high adherence level compared to other developed countries. The government does not have any authority in religion, so it means the free exercise of religion. Many faiths have flourished in the United States and have led the United States to become the most religiously diverse country in the world. Historically, in the 19th and early 20th centuries, the two major parties polarized along ethnic and religious grounds. In the North, most Protestants were Whigs or Republicans; most Catholics were Democrats. In the South, from the 1860s to the 1980s, most whites were Democrats (after 1865) and most blacks were Republicans. The majority of Americans identify themselves as Christians (71%), while non-Christian religions (including Islam, Judaism, Hindiusm, and others) collectively make up about 6% of the adult population. Another 23% of the adult population identified as having no religious affiliation. The United States has more Christians than any other country in the world. Going forward from its foundation, the United States has been called a Protestant nation by a variety of sources. What is Protestantism? It originated with the 16th century Reformation. Protestants reject the Roman Catholic doctrine of papal supremacy and sacraments, but disagree among themselves regarding the real presence of Christ in the Eucharist. They emphasize the priesthood of all believers, justification by faith alone rather than by good works, and the highest authority of the Bible alone (rather than with sacred tradition) in faith and morals. Politicians frequently discuss their religion when campaigning, and many churches and religious figures are highly politically active. There are Christians in both the Democratic Party and the Republican Party, but evangelical Christians tend to support the Republican Party whereas more liberal Christians, Catholics and secular voters tend to support the Democratic Party.