If you are asking due to the 15-1600s, then it's because the women back then were considered "unlawful" or "unacceptable" when they realized that they didn't have to be thrown around by the men. Women also did "witch-like" things such as warts, and long nails.
The Philippines. I know why cause I had a quiz on dis.
Answer: you did not provide the text
Explanation:
<span>Oxidation, occurs because the nail is slowly reacting with oxygen and moisture Hope this helps!</span>