Jews

==== Assimilation ====
{{main|Jewish assimilation|Interfaith marriage in Judaism}}
Since at least the time of the [[Ancient Greece|Ancient Greeks]], a proportion of Jews have assimilated into the wider non-Jewish society around them, by either choice or force, ceasing to practice Judaism and losing their [[Jewish identity]].<ref name=Johnson171>Johnson (1987), p. 171.</ref> Assimilation took place in all areas, and during all time periods,<ref name=Johnson171 /> with some Jewish communities, for example the [[Kaifeng Jews]] of [[China]], disappearing entirely.<ref>{{cite web|url=http://www.shavei.org/communities/kaifeng_jews/articles-kaifeng_jews/chinese-jews-reverence-for-ancestors/ |title=Chinese Jews: Reverence for Ancestors |last=Edinger |first=Bernard |date=15 December 2005 |publisher=Shavei Israel |access-date=2 April 2012 |url-status=dead |archive-url=https://web.archive.org/web/20121003094552/http://www.shavei.org/communities/kaifeng_jews/articles-kaifeng_jews/chinese-jews-reverence-for-ancestors/ |archive-date=3 October 2012}}</ref> The advent of the Jewish Enlightenment of the 18th century (see [[Haskalah]]) and the subsequent [[Jewish emancipation|emancipation of the Jewish populations]] of Europe and America in the 19th century, accelerated the situation, encouraging Jews to increasingly participate in, and become part of, [[Secularism|secular society]]. The result has been a growing trend of assimilation, as Jews marry non-Jewish spouses and stop participating in the Jewish community.<ref>Elazar (2003), p. 434.</ref>

Rates of [[Interfaith marriage|interreligious marriage]] vary widely: In the United States, it is just under 50&nbsp;percent,<ref>{{cite web|title=NJPS: Defining and Calculating Intermarriage |url=http://www.jewishfederations.org/page.aspx?id=46252 |website=The Jewish Federations of North America |access-date=2 April 2012 |url-status=dead |archive-url=https://web.archive.org/web/20110812024158/http://www.jewishfederations.org/page.aspx?id=46252 |archive-date=12 August 2011}}</ref> in the United Kingdom, around 53&nbsp;percent; in France; around 30&nbsp;percent,<ref>{{cite web |url=http://www-prod.akadem.org/medias/documents/Rapport-Erik-Cohen.pdf |title=Les juifs de France: La lente progression des mariages mixtes |trans-title=The Jews of France: The slow progression of mixed marriages |last=Cohen |first=Erik H. |date=November 2002 |publisher=Akadem |language=fr |access-date=12 October 2020 |archive-date=16 April 2021 |archive-url=https://web.archive.org/web/20210416230622/http://www-prod.akadem.org/medias/documents/Rapport-Erik-Cohen.pdf |url-status=dead }}</ref> and in Australia and Mexico, as low as 10&nbsp;percent.<ref>{{cite web|title=Australia|url=http://www.worldjewishcongress.org/en/communities/show/id/2|publisher=World Jewish Congress|access-date=2 April 2012|url-status=dead|archive-url=https://web.archive.org/web/20120521082932/http://www.worldjewishcongress.org/en/communities/show/id/2|archive-date=21 May 2012}}</ref> In the United States, only about a third of children from intermarriages affiliate with Jewish religious practice.<ref>{{cite web|url=http://jppi.org.il/uploads/Annual%20Assessment%202007.pdf|title=Annual Assessment 2007|access-date=3 July 2008|last=Waxman|first=Chaim I.|year=2007|publisher=Jewish People Policy Planning Institute ([[Jewish Agency for Israel]])|page=61}}</ref> The result is that most countries in the [[Jewish diaspora|Diaspora]] have steady or slightly declining religiously Jewish populations as Jews continue to assimilate into the countries in which they live.{{Citation needed|date=March 2016}}