Read this excerpt from the Preamble to the United States Constitution:

United States. Preamble and First Amendment to the United States Constitution. (1787, 1791) Preamble

We, the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution of the United States of America.

How did the 15th, 19th, and 26th Amendments expand the "Blessings of Liberty" to more of the United States' population? Write a short essay of 5 to 7 sentences to explain your answer.