All articles starting with S
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Second Goryeo–Khitan War
The Second Goryeo–Khitan War was the Liao empire's 1010–1011 invasion of Goryeo, in which the Khitan took the capital Gaegyeong but withdrew without securing the king's submission.
Second Great Awakening
The Second Great Awakening was a Protestant revival movement in the United States whose peak ran from about 1795 to 1835, marked by camp meetings and large membership growth.
Second Great Migration of the Serbs
The Second Great Migration of the Serbs (Друга велика сеоба Срба) was the 1737–1739 movement of Serbs from Kosovo and Old Serbia into the Habsburg Monarchy.
Second great Qiang rebellion
The second great Qiang rebellion was a series of Qiang revolts against Han dynasty rule in Liangzhou during the Yanxi era, crushed by Duan Jiong.
Second Hellenic Republic
Second Hellenic Republic (Ελληνική Δημοκρατία), the Greek kingless republic of 1924–1935, proclaimed 25 March 1924 after the Asia Minor defeat, governed under the Constitution of 1927 with an elected president, and abolished by the 1935 restoration.
Second Helping
Second Helping is Lynyrd Skynyrd's second studio album, released April 15, 1974 on MCA and produced by Al Kooper. It contains "Sweet Home Alabama" (No. 8 Hot 100), peaked at No. 12 on the Billboard 200, and is certified 2× Platinum.
Second Hijra to Aksum
The Second Hijra to Aksum was the 616 emigration of a second group of Muhammad's persecuted followers from Mecca to Aksum, led by Ja'far ibn Abi Talib.
Second Hungarian Republic
Second Hungarian Republic, parliamentary republic of Hungary, February 1946 to August 1949, proclaimed after abolition of the monarchy; ended when the May 1949 single-list election and the August 1949 constitution created the Hungarian People's Republic.
Second impeachment of Donald Trump
Second impeachment of Donald Trump: House charge of January 13, 2021 over the January 6 Capitol attack; Senate acquitted him 57-43 on February 13, 2021, with seven Republicans voting guilty.
Second impeachment of Sara Duterte
Second impeachment of Sara Duterte: the Philippine House impeached Vice President Sara Duterte on May 11, 2026 (257-25) after a 2025 impeachment was voided; Senate trial began July 6, 2026, narrowed to unexplained wealth in October 2026.
Second impeachment trial of Donald Trump
Second impeachment trial of Donald Trump, the February 9–13, 2021 Senate trial on incitement of insurrection after January 6; first trial of a former president, presided over by Patrick Leahy, acquitted 57–43 with seven Republicans voting guilty.
Second imperial campaign against Wang Chengzong
The second imperial campaign against Wang Chengzong (再討王承宗) was a Tang campaign against Chengde governor Wang Chengzong, triggered by his alleged assassination of a chancellor.
Second inauguration of Barack Obama
Second inauguration of Barack Obama, January 2013: private White House oath January 20 (Sunday), public Capitol ceremony January 21, 57th inaugural ceremony, 2,137-word address, Biden sworn by Sotomayor.
Second inauguration of Donald Trump
Second inauguration of Donald Trump, January 20, 2025, 60th Inaugural Ceremonies; sworn in as 47th president in the Capitol Rotunda due to cold, first indoor ceremony since Reagan 1985; JCCIC chaired by Amy Klobuchar; $241 million raised.
Second Industrial Revolution
The Second Industrial Revolution (c. 1870–1914) was a phase of industrial growth based on steel, chemicals, electricity, petroleum, and mass production, led by the United States and Germany, distinguished from the first revolution's coal, steam, textiles, and iron.
Second Intermediate Period of Egypt
The Second Intermediate Period of Egypt (ca. 1773–1550 BCE) lay between the Middle and New Kingdoms, when the Hyksos, kings of Levantine origin, ruled the north from Avaris.
Second International
The Second International (1889–1923) was the federation of socialist parties founded in Paris, successor to the First International; it created May Day, collapsed when its parties backed World War I in 1914, and dissolved into the Labour and Socialist International.
Second Intifada (الانتفاضة الثانية)
The Second Intifada, also called the al-Aqsa Intifada, was a Palestinian uprising against Israeli occupation that began in September 2000 after Ariel Sharon's Temple Mount visit and ended in 2005.
Second invasion of Korea (Keichō campaign)
The Second invasion of Korea, the Keichō campaign (慶長の役), was Toyotomi Hideyoshi's renewed war against Korea and Ming China, fought from 1597 to 1598 and ending with Japan's withdrawal after Hideyoshi's death.
Second Italian War of Independence
Second Italian War of Independence (1859–61), or Franco-Austrian War of 1859: Piedmont-Sardinia and France under Napoleon III defeated Austria at Magenta, Solferino and San Martino, gaining Lombardy, not Venetia; Villafranca armistice.
Second Italo-Ethiopian War
The Second Italo-Ethiopian War (Guerra d'Etiopia), 1935-1936: fascist Italy's invasion of Haile Selassie's Ethiopia from Eritrea and Somaliland, ending with the fall of Addis Ababa, League sanctions, and Italian mustard gas use.
Second Ivorian Civil War
The Second Ivorian Civil War was the 2010–2011 conflict in Côte d'Ivoire after Laurent Gbagbo refused to concede the disputed presidential election to Alassane Ouattara.
Second Javanese War of Succession
The Second Javanese War of Succession (1719–1723) was a dynastic war in Mataram, Java, fought between Susuhunan Amangkurat IV, backed by the Dutch East India Company, and rival princes.
Second Jinchuan Campaign
The Second Jinchuan Campaign (第二次金川之役) was the costlier of the two Qing wars against the Jinchuan chieftains of northwestern Sichuan, fought from 1771 to 1776.
Second language
Second language (L2): any language learned after a first language; the field of second language acquisition (SLA), founded in the 1960s, studies behaviorist, innatist, and interactionist theories, Krashen's Monitor Theory, age effects, and instruction outcomes.
Second law of thermodynamics
The second law of thermodynamics, also called the entropy law, restricts the direction of natural processes: heat flows spontaneously from hotter to colder bodies, and total entropy never decreases.
Second Lawrence Wong Cabinet
Second Lawrence Wong Cabinet: Singapore government formed after GE2025, announced 21 May 2025, sworn in 23 May 2025; PAP won 65% of the vote; reshuffled 22 July 2026 with Ng Chee Meng's return and the trade ministry renamed.
Second League of Prizren
The Second League of Prizren (Lidhja e Dytë e Prizrenit) was an Albanian political and military organization founded in Prizren in September 1943, seeking to keep Kosovo united with Albania.
Second Level Address Translation
Second Level Address Translation (SLAT), called nested paging under AMD-V, is an x86 virtualization hardware feature that maps guest-physical to host-physical addresses without hypervisor intervention.
Second Liberian Civil War
The Second Liberian Civil War (1999–2003) pitted Charles Taylor's government against the Guinea-backed LURD and Côte d'Ivoire-based MODEL rebels, ending with the August 2003 Accra Comprehensive Peace Agreement, Taylor's exile to Nigeria, and UNMIL peacekeepers.