What is the The 15th and 19th amendments do?

The 15th Amendment, ratified in 1870, prohibits the federal and state governments from denying a citizen the right to vote based on "race, color, or previous condition of servitude." The 19th Amendment, ratified in 1920, grants women the right to vote, ensuring that voting rights cannot be denied on the basis of sex. Together, these amendments significantly advanced civil rights and expanded the electorate in the United States.