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1607: Jamestown, Virginia founded by English settlers

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1607: Jamestown, Virginia founded by English settlers

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17-18th: Hundreds of thousands of Africans brought over at sold into slavery to work on cotton and tobacco plantations

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17-18th: Hundreds of thousands of Africans brought over at sold into slavery to work on cotton and tobacco plantations

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1775: American revolution: George Washington leads colonist Continental Army to fight against British ruler and deploys troops

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1775: American revolution: George Washington leads colonist Continental Army to fight against British ruler and deploys troops

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1776: Thomas Jefferson’s American Declaration of Independence endorsed by Congress; colonies declare independences

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1776: Thomas Jefferson’s American Declaration of Independence endorsed by Congress; colonies declare independences

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1787: Founding Fathers draw up new constitution for United States of America. Constitution comes into effect in 1788

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1787: Founding Fathers draw up new constitution for United States of America. Constitution comes into effect in 1788

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1789: George Washington elected first president of USA

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1789: George Washington elected first president of USA

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1791 - Bill of Rights guarantees individual freedom

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1791 - Bill of Rights guarantees individual freedom

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19th century - Residual resistance by indigenous people crushed; immigration from Europe assumes mass proportions; settlers moving westwards; number of states in the union rises from 17 to 45 (Frontier)

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19th century - Residual resistance by indigenous people crushed; immigration from Europe assumes mass proportions; settlers moving westwards; number of states in the union rises from 17 to 45 (Frontier)

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1854: Opponents of slavery, or abolitionists, set up Republican Party

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1854: Opponents of slavery, or abolitionists, set up Republican Party

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1860: Republican candidate Abraham Lincoln elected president

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1860: Republican candidate Abraham Lincoln elected president

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1860-61: Eleven pro-slavery southern states detach from Union and form Confederate States of America under leadership of Jefferson Davis, triggering Civil War (1861-1865). 

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1860-61: Eleven pro-slavery southern states detach from Union and form Confederate States of America under leadership of Jefferson Davis, triggering Civil War (1861-1865). 

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1863 - Lincoln issues Emancipation Proclamation, declaring slaves in Confederate states to be free 1865 - Confederates defeated; slavery abolished under Thirteenth Amendment. Lincoln is assassinated

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1863 - Lincoln issues Emancipation Proclamation, declaring slaves in Confederate states to be free 1865 - Confederates defeated; slavery abolished under Thirteenth Amendment. Lincoln is assassinated

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1920 - Women given the right to vote under the Nineteenth Amendment

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1920 - Women given the right to vote under the Nineteenth Amendment

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1960 - Democratic Party candidate John F Kennedy elected president1963: president John F Kennedy assassinated; Lyndon Johnson becomes president1963: Martin Luther King holds his famous speech I have a Dream

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1960 - Democratic Party candidate John F Kennedy elected president1963: president John F Kennedy assassinated; Lyndon Johnson becomes president1963: Martin Luther King holds his famous speech I have a Dream

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1968 - Civil rights leader Martin Luther King assassinated

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1968 - Civil rights leader Martin Luther King assassinated

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1976 Democratic candidate Jimmy Carter elected president1980 November - Republican Party's Ronald Reagan elected president

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1976 Democratic candidate Jimmy Carter elected president1980 November - Republican Party's Ronald Reagan elected president

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1988 - Reagan's vice-president, George Bush, elected president

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1988 - Reagan's vice-president, George Bush, elected president

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2001 11 September - Four passenger aircraft are hijacked and crashed into the World Trade Center in New York, the Pentagon and into a field in Pennsylvania; 3,025 people are killed in the attacks

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2001 11 September - Four passenger aircraft are hijacked and crashed into the World Trade Center in New York, the Pentagon and into a field in Pennsylvania; 3,025 people are killed in the attacks

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2008: June -Illinois, senator Barack Obama wins Democratic Party’s nomination to run for US presidency, becoming the first black candidate to do so

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2008: June -Illinois, senator Barack Obama wins Democratic Party’s nomination to run for US presidency, becoming the first black candidate to do so

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2016: Trump (Republican) elected President

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2016: Trump (Republican) elected President

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2020: Joe Biden (Democrat) elected president, and Kamala Harris elected vice- president 

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2020: Joe Biden (Democrat) elected president, and Kamala Harris elected vice- president 