Since 1923 a rock found with inscriptions have been studied. The symbols look just like Viking Runes that would sustain the theory that Vigings have been to America long before Columbus. The theory is however contested by experts, some of which thinks that itis a hoax. The rock is known as "the Heavener Runestone".
Women's Suffrage summary: The women's suffrage movement (aka woman suffrage) was the struggle for the right of women to vote and run for office and is part of the overall women's rights movement.