National American Sign Language Day in United States
National American Sign Language Day in United States is held on April 15. National ASL Day. This event in the second decade of the month April is annual. 
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On April 15, 1817, the first lasting school for the deaf in the United States opened. Students gathered there over the years and at subsequent deaf schools across our nation. The children intermingled Native American Signs, French Sign Language, and Martha’s Vineyard Sign Language. This process brought forth modern American Sign Language.
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