Amendment Timeline By MasterSamuel00 Feb 3, 1870 The 15th Amnedment The 15th Amendment is ratified, which grants men the right to vote, regardless of race. Period: Feb 3, 1870 to Jul 1, 1971 Amendment Timeline Aug 20, 1920 The 19th Amendment The 19th Amendment has been ratified, which granted women the right to vote.