| 1519 | | 10 Aug:
Magellan sets sail from Seville on a journey around the world.Fordham SIMag |
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| 1524 | | 17 Jan:
Giovanni da Verrazanno sets sail from Madeira, Portugal to explore North America - from North Carolina north to Newfoundland.MM&P AJ |
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| 1654 | | 26 Jan:
Portugal decrees that Jewish and Dutch settlers have three months to leave Brazil. Many of the refugees go on to establish the first Jewish community in Nieuw-Amsterdam.LoC JVL |
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| 1755 | | 1 Nov:
An earthquake destroys Lisbon, Portugal killing an estimated 70,000 people.Earth SA |
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| 1897 | | 20 Aug:
World Mosquito Day marks the discovery of the malaria parasite.Mosquito EM |
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| 1914 | |
| 1918 | | Feb:
The Spanish Flu pandemic kills at least 3% of the World's population.VLib npr |
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| 1919 | |
| 1939 | |
| 1945 | |
| 1949 | | 4 Apr:
NATO, or the North Atlantic Treaty Organization, is founded.USNA Avalon |
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| 1957 | | 27 Sep:
Capelinhos Volcano - a volcano begins erupting off the west coast of Faial, Azores lasting 13 months, causing an economic disaster and forcing a mass migration to the United States.PAJ PM |
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Portugal
