ASL does have a large heritage from French Sign Language, but it also was influenced by Martha’s Vineyard Sign Language. https://en.m.wikipedia.org/wiki/Martha

ASL does have a large heritage from French Sign Language, but it also was influenced by Martha’s Vineyard Sign Language. https://en.m.wikipedia.org/wiki/Martha%27s_Vineyard_Sign_Language https://en.m.wikipedia.org/wiki/Martha%27s_Vineyard_Sign_Lan...