Historic Events in the United States By jarod4509896 Period: Apr 10, 1606 to Oct 7, 1763 Colonial America Time Period May 14, 1607 Settlement of Jamestown Nov 11, 1620 Signing of Mayflower Compact Sep 8, 1636 Harvard University founded Mar 4, 1681 William Penn receives charter for colony that becomes Pennsylvania Period: Jan 1, 1775 to Dec 31, 1815 Early National Period Jul 4, 1776 Signing of Declaration of Independence Sep 17, 1787 US Constitutional Convention Apr 30, 1803 Louisiana Purchase Jun 18, 1812 War of 1812 Period: Jan 1, 1820 to Dec 31, 1865 Common School Movement Jun 14, 1822 First computer invented Apr 20, 1837 Horace Mann begins has advocacy for Education Period: Jan 1, 1865 to Dec 31, 2015 1865-Present Apr 9, 1865 End of Civil War Dec 6, 1865 Slavery abolished May 18, 1896 Plessy v. Ferguson May 17, 1954 Brown v. Board of Education of Topeka, Kansas Nov 14, 1960 Ruby Bridges breaks education color barrier Jul 2, 1964 Civil Rights Act of 1964 enacted