[August 18, 1920] The 19th Amendment to the US Constitution is ratified. It prohibits states and the federal government from denying the right to vote on the basis of sex, granting women's suffrage.
from /r/100yearsago
1920年8月18日] 美国宪法第19条修正案获得批准。它禁止各州和联邦政府以性别为由剥夺投票权，赋予妇女以选举权。