The Declaration of Sentiments, Seneca Falls Conference 1848

From Wikipedia: The Declaration of Sentiments, is a women's rights document authored by Elizabeth Cady Stanton and Lucretia Mott, and demanded equal rights for women, including the right to vote.
Thomas Paine--Common Sense, 1776

Common Sense is a pamphlet, written anonymously by Thomas Paine, giving arguments for American independence from Britain.
Treaty of Guadalupe Hidalgo

From Wikipedia: The Treaty of Guadalupe Hidalgo is the treaty that ended the Mexican-American war. The treaty provided for the Mexican Cession in which Mexico gave up 1.36 million square kilometers of its pre-war territory to the U.S.
United States Constitution

From Wikipedia: The Constitution of the United States of America is the supreme law of the United States. It is the foundation and source of the legal authority underlying the existence of the United States of America and the federal government of the United States.