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Year Written: 1215, Primary Author(s): Archbishop Stephen Langton and others, Significance: Limited the power of the king and laid the foundation for modern democracy

Year Written: 1776, Primary Author(s): Thomas Jefferson, Significance: Declared the thirteen American colonies independent from Great Britain

Year Written: 1787, Primary Author(s): James Madison, Significance: Establishes the government framework of the United States and its laws; the supreme law of the land

Year Written: 1791, Primary Author(s): James Madison, Significance: The first ten amendments to the United States Constitution, guaranteeing individual liberties

Year Written: 1848, Primary Author(s): Karl Marx and Friedrich Engels, Significance: Advocated for communism and influenced the political landscape of the 20th century

Year Written: 1863, Primary Author(s): Abraham Lincoln, Significance: Declared all slaves in Confederate states to be free

Year Written: 1919, Primary Author(s): Allied Powers, Significance: Ended World War I and imposed harsh penalties on Germany

Year Written: 1948, Primary Author(s): Draft Committee chaired by Eleanor Roosevelt, Significance: A foundational document for human rights internationally

Year Written: 1949 and additional protocols in 1977, Primary Author(s): Various international committees and states, Significance: Set of treaties regarding humanitarian treatment during war

Year Written: 1964, Primary Author(s): United States Congress, Significance: Landmark legislation in the U.S. that outlawed segregation and discrimination based on race, color, religion, sex, or national origin

Year Written: 1679, Primary Author(s): Parliament of England, Significance: Strengthens the legal procedure of habeas corpus, which protects against unlawful and indefinite imprisonment

Year Written: 1494, Primary Author(s): Pope Alexander VI, Significance: Divided the newly discovered lands outside Europe between Portugal and Spain

Year Written: 1598, Primary Author(s): King Henry IV of France, Significance: Granted the Calvinist Protestants of France substantial rights in a nation still considered essentially Catholic

Year Written: 1648, Primary Author(s): Various European Powers, Significance: Series of peace treaties that ended the Thirty Years' War and established the modern state system

Year Written: 1493, Primary Author(s): Pope Alexander VI, Significance: Authorized Spain to colonize the Americas and its territories

Year Written: 1689, Primary Author(s): Parliament of England, Significance: Expanded the rights of the Parliament and the people, while limiting the powers of the king

Year Written: 1920, Primary Author(s): United States Congress, Significance: Granted American women the right to vote

Year Written: 1840, Primary Author(s): British representatives and Māori chiefs, Significance: Established a British Governor in New Zealand, recognized Maori ownership of their lands, and gave the Maori the rights of British subjects

Year Written: 1762, Primary Author(s): Jean-Jacques Rousseau, Significance: Outlined Rousseau's ideas on how government should be formed based on the general will of the people

Year Written: 1620, Primary Author(s): Pilgrims/Separatists who sailed on the Mayflower, Significance: An early form of self-governance and representative democracy established by colonists in America

Year Written: 1713, Primary Author(s): European Powers, Significance: Ended the War of the Spanish Succession and redrew the map of Europe

Year Written: 1815, Primary Author(s): Diplomats from major powers of Europe, Significance: Redrew Europe's political map after the defeat of Napoleonic France, establishing a balance of power

Year Written: 1975, Primary Author(s): Leaders from 35 nations including the US, Canada, and the countries of Europe, Significance: Addressed a range of prominent global issues and paved the way for the end of the Cold War

Year Written: 1916, Primary Author(s): Sir Mark Sykes and François Georges-Picot, Significance: Secret agreement that defined the proposed spheres of influence and control in the Middle East for Britain and France post-World War I