United States

=== Post-Civil War era ===
{{Main|History of the United States (1865–1917)}}
[[File:Emigrants (i.e. immigrants) landing at Ellis Island -.webm|thumb|An [[Edison Studios]] film showing immigrants arriving at [[Ellis Island]] in [[New York Harbor]], a major point of entry for European [[Immigration to the United States|immigrants]] in the late 19th and early 20th centuries<ref name="PriceBenton-Short2008">{{cite book|first1=Marie|last1=Price|first2=Lisa|last2=Benton-Short|title=Migrants to the Metropolis: The Rise of Immigrant Gateway Cities|url=https://books.google.com/books?id=_Tb5HMB63xAC&pg=PA51|year=2008|publisher=Syracuse University Press|isbn=978-0-8156-3186-6|page=51}}</ref><ref>{{Cite web |date=March 4, 2020 |title=Overview + History {{!}} Ellis Island |url=https://www.statueofliberty.org/ellis-island/overview-history/ |access-date=September 10, 2021 |website=Statue of Liberty & Ellis Island |language=en}}</ref>]]

From 1865 through 1917 an unprecedented stream of immigrants arrived in the United States, including 24.4 million from Europe.<ref>U.S. Bureau of the Census, ''Historical Statistics of the United States'' (1976) series C89-C119, pp&nbsp;105–9</ref> Most came through the [[Port of New York and New Jersey|port of New York City]], and New York City and other large cities on the [[East Coast of the United States|East Coast]] became home to large [[History of the Jews in the United States|Jewish]], [[Irish Americans|Irish]], and [[Italian Americans|Italian]] populations, while many [[German Americans|Germans]] and Central Europeans moved to the [[Midwestern United States|Midwest]]. At the same time, about one million [[French-Canadian Americans|French Canadians]] migrated from [[Quebec]] to [[New England]].<ref>Stephan Thernstrom, ed., ''Harvard Encyclopedia of American Ethnic Groups'' (1980) covers the history of all the main groups</ref> During the [[Great Migration (African American)|Great Migration]], millions of African Americans [[Jim Crow economy|left the rural South]] for urban areas in the North.<ref>{{Cite web |date=May 20, 2021 |title=The Great Migration (1910–1970) |url=https://www.archives.gov/research/african-americans/migrations/great-migration |publisher=National Archives}}</ref> Alaska was [[Alaska Purchase|purchased]] from [[Russian Empire|Russia]] in 1867.<ref>{{cite web |title=Purchase of Alaska, 1867 |url=https://history.state.gov/milestones/1866-1898/alaska-purchase |access-date=December 23, 2014 |website=Office of the Historian |publisher=U.S. Department of State}}</ref>

The [[Compromise of 1877]] effectively ended Reconstruction and [[Redeemers|white supremacists took local control of Southern politics]].<ref>{{cite book |last=Woodward |first=C. Vann |title=Reunion and Reaction: The Compromise of 1877 and the End of Reconstruction |date=1991 |publisher=Oxford University Press |location=United Kingdom}}</ref><ref>{{cite web |author1=Drew Gilpin Faust |author-link=Drew Gilpin Faust |author2=Eric Foner |author2-link=Eric Foner |author3=Clarence E. Walker |author3-link=Clarence E. Walker |title=White Southern Responses to Black Emancipation |url=http://www.pbs.org/wgbh/americanexperience/features/reconstruction-white-southern-responses-black-emancipation/ |work=[[American Experience]]}}</ref> African Americans endured a period of heightened, overt racism following Reconstruction, a time often called the [[nadir of American race relations]].<ref name="ReferenceA2">{{cite book |last=Trelease |first=Allen W. |title=White Terror: The Ku Klux Klan Conspiracy and Southern Reconstruction |publisher=Harper & Row |year=1979 |isbn=0-313-21168-X |location=New York}}</ref><ref>{{cite book |author=Shearer Davis Bowman |url=https://archive.org/details/masterslordsmid10000bowm |title=Masters and Lords: Mid-19th-Century U.S. Planters and Prussian Junkers |publisher=Oxford UP |year=1993 |isbn=978-0-19-536394-4 |page=[https://archive.org/details/masterslordsmid10000bowm/page/221 221] |url-access=registration}}</ref> A series of Supreme Court decisions, including [[Plessy v. Ferguson]], emptied the Fourteenth and Fifteenth Amendments of their force, allowing [[Jim Crow laws]] in the South to remain unchecked, [[sundown town]]s in the Midwest, and [[racial segregation in the United States|segregation]] in cities across the country, which would be reinforced by the policy of [[redlining]] later adopted by the federal [[Home Owners' Loan Corporation]].<ref>{{cite journal |title=Plessy's Legacy: The Government's Role in the Development and Perpetuation of Segregated Neighborhoods |last=Ware |first=Leland |journal=RSF: The Russell Sage Foundation Journal of the Social Sciences |date=February 2021 |pages=92–109 |volume=7 |issue=1 |doi=10.7758/rsf.2021.7.1.06 |s2cid=231929202 }}</ref>

[[Second Industrial Revolution|An explosion of technological advancement]] accompanied by the exploitation of cheap immigrant labor<ref>{{cite journal |last1=Hirschman |first1=Charles |last2=Mogford |first2=Elizabeth |date=1 December 2009 |title=Immigration and the American Industrial Revolution From 1880 to 1920 |journal=Social Science Research |volume=38 |issue=4 |pages=897–920 |doi=10.1016/j.ssresearch.2009.04.001 |issn=0049-089X |pmc=2760060 |pmid=20160966}}</ref> led to [[Gilded Age|rapid economic development]] during the late 19th and early 20th centuries, allowing the United States to outpace England, France, and Germany combined.<ref>{{cite book |last1=Carson |first1=Thomas |last2=Bonk |first2=Mary |title=Gale Encyclopedia of U.S. Economic History |date=1999 |publisher=Gale |chapter=Industrial Revolution}}</ref><ref>{{cite book |last1=Riggs |first1=Thomas |title=Gale Encyclopedia of U.S. Economic History Vol. 3 |date=2015 |publisher=Gale |page=1179 |edition=2}}</ref> This fostered the amassing of power by [[Robber baron (industrialist)|a few prominent industrialists]], largely by their formation of [[Trust (business)|trusts]] and [[Monopoly|monopolies]] to prevent competition.<ref name="Atlantic2">{{Cite journal |last=Dole |first=Charles F. |year=1907 |title=The Ethics of Speculation |journal=[[The Atlantic Monthly]] |volume=C |issue=December 1907 |pages=812–818}}</ref> [[Tycoon]]s led the nation's expansion in the [[History of rail transportation in the United States|railroad]], [[History of the petroleum industry in the United States|petroleum]], and [[History of the steel industry (1850–1970)|steel]] industries. The United States emerged as a pioneer of the [[Automotive industry in the United States|automotive industry]].<ref>{{cite web |author1=The Pit Boss |date=February 26, 2021 |title=The Pit Stop: The American Automotive Industry Is Packed With History |url=https://pitstop.rumbleon.com/american-automotive-history |access-date=December 5, 2021 |website=Rumble On}}</ref> These changes were accompanied by significant increases in [[economic inequality]], [[How the Other Half Lives|slum conditions]], and [[List of incidents of civil unrest in the United States|social unrest]], creating the environment for [[Labor history of the United States|labor unions to begin to flourish]].<ref>Tindall, George Brown and Shi, David E. (2012). ''America: A Narrative History (Brief Ninth Edition) (Vol. 2).'' [[W. W. Norton & Company]]. {{ISBN|978-0-393-91267-8}} p. 589</ref><ref>[[United States#Zinn|Zinn, 2005]], pp. 321–357</ref><ref name="Fraser2">{{cite book |last=Fraser |first=Steve |title=The Age of Acquiescence: The Life and Death of American Resistance to Organized Wealth and Power |publisher=[[Little, Brown and Company]] |year=2015 |isbn=978-0-316-18543-1 |page=66}}</ref> This period eventually ended with the advent of the [[Progressive Era]], which was characterized by significant reforms.<ref name="Aldrich2">Aldrich, Mark. ''Safety First: Technology, Labor and Business in the Building of Work Safety, 1870-1939.'' Baltimore: Johns Hopkins University Press, 1997. {{ISBN|0-8018-5405-9}}</ref><ref>{{cite web |title=Progressive Era to New Era, 1900-1929 {{!}} U.S. History Primary Source Timeline {{!}} Classroom Materials at the Library of Congress {{!}} Library of Congress |url=https://www.loc.gov/classroom-materials/united-states-history-primary-source-timeline/progressive-era-to-new-era-1900-1929/overview/ |access-date=11 November 2023 |website=Library of Congress, Washington, D.C. 20540 USA}}</ref>