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693 things · 153 votes cast · add yours
All | Arts | Biology and health sciences | Everyday life | Geography | History | Mathematics | People | Philosophy and religion | Physical sciences | Society and social sciences | Technology
| # | Thing | Description | Topic | For | Against | Net | |
|---|---|---|---|---|---|---|---|
| 551 |  | Republic of Venice | Maritime republic in Italy (697–1797) | History | 0 | 0 | 0 |
| 552 |  | Revolutions of 1848 | Series of political upheavals in Europe | History | 0 | 0 | 0 |
| 553 |  | Revolutions of 1989 | Revolutionary wave overthrowing most communist states in Europe | History | 0 | 0 | 0 |
| 554 |  | Roman Empire | 27 BC–476/1453 AD state and civilization | History | 0 | 0 | 0 |
| 555 |  | Roman Kingdom | Period of Roman history (c. 753 – c. 509 BC) | History | 0 | 0 | 0 |
| 556 |  | Roman Republic | Period of Roman history (c. 509 – 27 BC) | History | 0 | 0 | 0 |
| 557 | Roman–Persian wars | History | 0 | 0 | 0 | ||
| 558 |  | Rurikids | Noble lineage and rulers of Kievan Rus' | History | 0 | 0 | 0 |
| 559 |  | Russian Civil War | Multi-party war in the former Russian Empire (1917–1922) | History | 0 | 0 | 0 |
| 560 |  | Russian Empire | Russian state from 1721 to 1917 | History | 0 | 0 | 0 |
| 561 |  | Russian Revolution of 1905 | Political and social unrest in the Russian Empire | History | 0 | 0 | 0 |
| 562 |  | Russo-Japanese War | 1904–1905 conflict in East Asia | History | 0 | 0 | 0 |
| 563 |  | Russo-Turkish War (1877–1878) | Eleventh and penultimate conflict of the Russo-Turkish wars | History | 0 | 0 | 0 |
| 564 |  | Rwandan genocide | Mass murder campaign in Rwanda | History | 0 | 0 | 0 |
| 565 |  | Safavid dynasty | Twelver Shīʿa ruling dynasty of Iran (1501–1736) | History | 0 | 0 | 0 |
| 566 |  | Samurai | Japanese warrior class | History | 0 | 0 | 0 |
| 567 |  | Sarmatians | Large Iranian confederation that existed in classical antiquity | History | 0 | 0 | 0 |
| 568 |  | Sasanian Empire | Last pre-Islamic Iranian empire (224–651 AD) | History | 0 | 0 | 0 |
| 569 |  | Satavahana dynasty | Indian dynasty (2nd century BCE – 3rd century CE) | History | 0 | 0 | 0 |
| 570 |  | Saxons | Medieval cultural group from what is now Northern Germany | History | 0 | 0 | 0 |
| 571 |  | Scientific Revolution | Emergence of modern science (1572-1687) | History | 0 | 0 | 0 |
| 572 |  | Scramble for Africa | 1870s–1914 European colonisation of Africa | History | 0 | 0 | 0 |
| 573 |  | Scythians | Nomadic Iranic people of the Pontic Steppe | History | 0 | 0 | 0 |
| 574 |  | Second Boer War | 1899–1902 war in South Africa | History | 0 | 0 | 0 |
| 575 |  | Second Bulgarian Empire | Medieval Bulgarian state (1185–1396) | History | 0 | 0 | 0 |
| 576 |  | Second Congo War | 1998–2003 war in central Africa | History | 0 | 0 | 0 |
| 577 |  | Second Industrial Revolution | 1870–1914 electrical and chemical era | History | 0 | 0 | 0 |
| 578 |  | Second Italo-Ethiopian War | 1935–1936 war between Italy and Ethiopia | History | 0 | 0 | 0 |
| 579 |  | Second Opium War | 1856–1860 war between British–French forces and China | History | 0 | 0 | 0 |
| 580 |  | Second Sino-Japanese War | 1937–1945 conflict in East Asia | History | 0 | 0 | 0 |
| 581 |  | Seleucid Empire | Hellenistic state in West Asia (312–63 BC) | History | 0 | 0 | 0 |
| 582 | Seljuk Empire | Turco-Persianate empire (1037–1194) | History | 0 | 0 | 0 | |
| 583 |  | September 11 attacks | 2001 terror attacks in the U.S. | History | 0 | 0 | 0 |
| 584 |  | Serfdom | Status of peasants under feudalism | History | 0 | 0 | 0 |
| 585 |  | Seven Years' War | Global war among European powers (1756–1763) | History | 0 | 0 | 0 |
| 586 |  | Sexual revolution | 20th-century Western social movement | History | 0 | 0 | 0 |
| 587 |  | Shang dynasty | Chinese dynasty (c. 1600 – c. 1046 BC) | History | 0 | 0 | 0 |
| 588 |  | Sheba | Ancient South Arabian kingdom | History | 0 | 0 | 0 |
| 589 |  | Sikh Empire | Empire on the Indian subcontinent, 1799–1849 | History | 0 | 0 | 0 |
| 590 |  | Silk Road | Historical network of Eurasian trade routes | History | 0 | 0 | 0 |
| 591 |  | Sinking of the Titanic | 1912 maritime disaster | History | 0 | 0 | 0 |
| 592 |  | Sino-Burmese War | Qing dynasty war of expansion (1765 - 1769) | History | 0 | 0 | 0 |
| 593 | Sixteen Kingdoms | Period of Chinese history from 304 to 439 | History | 0 | 0 | 0 | |
| 594 |  | Sogdia | Ancient Iranian civilization (6th century BCE – 11th century CE) | History | 0 | 0 | 0 |
| 595 |  | Sokoto Caliphate | Islamic state in West Africa (1804–1903) | History | 0 | 0 | 0 |
| 596 |  | Song dynasty | Imperial dynasty of China (960–1279) | History | 0 | 0 | 0 |
| 597 |  | Songhai Empire | Empire in West Africa from c. 1464 to 1591 | History | 0 | 0 | 0 |
| 598 |  | Soviet Union | Country in Eurasia from 1922 to 1991 | History | 0 | 0 | 0 |
| 599 |  | Space Race | US–USSR spaceflight capability rivalry | History | 0 | 0 | 0 |
| 600 |  | Spanish Civil War | 1936–1939 civil war in Spain | History | 0 | 0 | 0 |
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