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I don't have specific context about what "1386" refers to. Without additional information about whether this refers to a historical year, an event, a code, or something else, I cannot write an accurate overview for you. Could you please provide more context about what "1386" is?
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Article
February 18: The Grand Duke Jogaila of Lithuania marries Queen Jadwiga of Poland and unites the two nations.
The new Polish-Lithuanian Commonwealth is created. Year 1386 (MCCCLXXXVI) was a common year starting on Monday of the Julian calendar.