Wikipedia:Àwọn Ìṣẹ̀lẹ̀ Bíi Ọjọ́ Òní/Ọjọ́ 30 Oṣù Kẹrin
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![Àsìá Àgbájọ àwọn Orílẹ̀-èdè Amẹ́ríkà](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Flag_of_the_Organization_of_American_States.svg/100px-Flag_of_the_Organization_of_American_States.svg.png)
- 1492 – Spain gives Christopher Columbus his commission of exploration.
- 1838 – Nicaragua declares independence from the Central American Federation.
- 1948 – In Bogotá, Colombia, the Organization of American States (àsìá) is established.
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- 1777 – Carl Friedrich Gauss, German mathematician (d. 1855)
- 1943 – Frederick Chiluba, former Zambian president (d. 2011)
- 1959 – Stephen Harper, Prime Minister of Canada
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- 1945 – Adolf Hitler, German dictator of Nazi Germany (b. 1889)
- 1983 – Muddy Waters, American musician (b. 1913)
- 1989 – Sergio Leone, Italian filmmaker (b. 1929)