Religion and politics in the United States
Religion in the United States is remarkable in its high adherence level compared to other developed countries. The First Amendment to the country's Constitution prevents the government from having any authority in religion, and guarantees the free exercise of religion. Many faiths have flourished in the United States, including imports spanning the country's multicultural heritage as well as those founded within the country, 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 1960s, most whites were Democrats (after 1865) and most blacks were Republicans (see Ethnocultural politics in the United States). The majority of Americans identify themselves as Christians (65% as of 2019), while non-Christian religions (including Islam, Judaism, Hinduism, and others) collectively make up about 6% of the adult population. Another 26% of the adult population identified as having no religious affiliation. A majority of Americans report that religion plays a "very important" role in their lives, a proportion unusual among developed nations,