Each 'American' Era is marked by dates, events and people. As an outline:
1770 - 1790
Founding Era
Revolutionary War
Thomas Jefferson
1820 - 1877
Antibellum/Civil War/Reconstrution Era
Classical Greek Style Southern Architecture, The Louisiana Purchase, The Missouri Compromise, The Civil War and Reconstruction (1850 - 1877)
Abraham Lincoln, Harriet Beecher Stowe, Fredrick Douglas, Mary Ann Bickerdyke
1877 - 1954
The Progressive Era (also known as The Jim Crow Era)
The Compromise of 1877, The Sixteenth, Seventeenth, Eighteenth and Nineteenth Amendments, Women's Sufferage, Muckrakers, The Federal Reserve
Woodrow Wilson, Marcus Garvey, Elizabeth Katie Stanton, Susan B. Anthony, Madam C. J. Walker (Sarah Breedlove), Booker T. Washington
1954 - Present
The Civil Rights Era
Brown vs. Board of Education, The Civil Rights Act of 1954, 1963 March on Washington, The Voting Rights Act of 1965, The Montgomery Bus Boycott, The Civil Rights Act, April 11, 1968, Civil Rights Restoration Act, Civil Rights Act of 1991, Roe v. Wade
Thurgood Marshall, Martin Luther King, Jr., Mary Church Terrell, Nannie Helen Burroughs, Jack and Bobby Kennedy, Marcolm X, Rosa Parks, Stephen Donaldson, Matthew Shepard, Gloria Steinem, Phil Wilson and Gavin Newsom
Each Era in the history of the United States of America saw changes to society, its mores, doctrines and laws. The US Constitution could never be 'static.' It is one of the most progressive documents ever written in history. It never 'stops' realizing its CAPACITY in the citizen's ability to 'grasp' its dynamics. Without the movers and shakers in the society of the USA, its Constitution would be sequestered to its original date of signature. It is one of the most incredibly 'useful' documents of any government and never losses its capacity.
