[12Thousand BC] North American Indian cultures flourish.

[1000] Leif Ericsson lands in Newfoundland

[1492] Christopher Columbus lands in the Bahamas

[1513] Juan Ponce de Leon lands on the coast of Florida.

[1565] Saint Augustine

[1607] Jamestown, the first permanent English settlement

[1619] The House of Burgesses

[1620] The Plymouth Colony in Massachusetts

[1650] Population 50,400

[1664] New York renamed

[1752] Gregorian calendar

[1754] French and Indian War

[1770] Boston Massacre

[1773] Boston Tea Party

[1774] First Continental Congress

[1775] American Revolution

[1776] Declaration of Independence

[1777] Valley Forge battle

[1777] official flag and Articles of Confederation

[1781] Charles Cornwallis surrenders

[1783] Treaty of Paris

[1786] Shays's Rebellion

[1787] Constitutional Convention draft U.S. Constitution

[1789] George Washington elected

[1790] U.S. Supreme Court meets for the first time

[1791] Bill of Rights

[1793] Washington's second inauguration

[1797] Second president John Adams

[1800] The U.S. capital is moved from Philadelphia to Washington, DC

[1801] 3rd president Thomas Jefferson

[1803] Marbury v. Madison

[1803] Louisiana Purchase

[1804] Lewis and Clark route to Pacific Ocean

[1805] Jefferson's second inauguration

[1809] 4th president James Madison

[1812] War of 1812

[1813] Madison's second inauguration

[1814] British capture Washington, DC

[1814] Star-Spangled Banner

[1814] Treaty of Ghent

[1817] 5th president James Monroe

[1819] Spain agrees to cede Florida to the United States

[1820] Missouri Compromise

[1821] Monroe's second inauguration

[1822] Denmark Vesey plans a slave revolt

[1823] Monroe Doctrine

[1824] Gibbons v. Ogden: Landmark Supreme Court decision

[1825] 6th president John Quincy Adams

[1828] First public railroad started

[1829] 7th president Andrew Jackson

[1830] President Jackson signs the Indian Removal Act

[1831] Nat Turner leads the most significant slave uprising

[1831] abolitionist movement.

[1833] Jackson's second inauguration

[1836] Texas declares its independence from Mexico

[1837] 8th president Martin Van Buren

[1838] Cherokee Indians' “Trail of Tears.”

[1841] 9th president William Henry Harrison

[1845] U.S. annexes Texas

[1845] 11th president James Polk

[1845] manifest destiny

[1846] Oregon Treaty fixes U.S.-Canadian border

[1846] attempts to ban slavery in territory gained in the Mexican War

[1846] Mexican War

[1848] Treaty of Guadalupe Hidalgo

[1848] Gold is discovered

[1848] Women's rights convention

[1849] 12th president Zachary Taylor

[1849] Harriet Tubman & Underground Railroad

[1850] President Taylor dies

[1850] Compromise of 1850

[1852] Uncle Tom's Cabin is published

[1853] 14th president,Franklin Pierce

[1853] Gadsden Purchase treaty

[1854] Kansas-Nebraska Act

[1857] 15th president, James Buchanan

[1857] Dred Scott v. Sanford: Landmark Supreme Court decision

[1858] Abraham Lincoln comes to national attention

[1859] Abolitionist John Brown capture

[1860] Abraham Lincoln is elected president

[1860] South Carolina secedes from the Union

[1861] Mississippi & others secede

[1861] Confederate States of America is established

[1861] Texas secedes

[1861] 16th president Abraham Lincoln

[1861] Civil War

[1863] Emancipation Proclamation

[1863] Battle of Gettysburg

[1863] Homestead Act becomes law

[1864] Gen. William T. Sherman captures Atlanta

[1865] Lincoln's second inauguration

[1865] Confederate general Robert E. Lee surrenders

[1865] Lincoln is assassinated

[1866] American Federation of Labor

[1867] U.S. acquires Alaska from Russia

[1868] President Johnson is impeached

[1868] Fourteenth Amendment & citizenship

[1869] 18th president Ulysses S. Grant

[1869] First transcontinental railroad

[1870] Fifteenth Amendment & blacks the right to vote

[1871] Chicago fire

[1872] Crédit Mobilier scandal breaks

[1873] Grant's second inauguration

[1876] Sitting Bull at the Little Big Horn River

[1877] 19th president Rutherford B. Hayes

[1881] 20th president James A. Garfield & die

[1882] U.S. adopts standard time

[1885] 22nd president Grover Cleveland

[1886] Statue of Liberty

[1889] 23rd president Benjamin Harrison

[1890] National American Woman Suffrage Association

[1890] Sherman Antitrust Act

[1890] Last major battle of the Indian Wars

[1892] Ellis Island & immigration

[1893] 24th president, Grover Cleveland

[1896] Plessy v. Ferguson: Landmark Supreme Court decision

[1897] 25th president, William McKinley

[1898] Spanish-American War

[1898] U.S. annexes Hawaii

[1899] U.S. acquires American Samoa

[1900] Galveston hurricane

[1901] McKinley's death & Roosevelt

[1903] U.S. acquires Panama Canal Zone

[1903] Wright brothers at Kitty Hawk

[1905] Theodore Roosevelt's second inauguration

[1906] San Francisco earthquake

[1908] Bureau of Investigation

[1909] 27th president William Howard Taft

[1913] 28th president, Woodrow Wilson

[1913] Seventeenth Amendment to the Constitution

[1914] World War I

[1914] Panama Canal opens

[1915] First long distance telephone service

[1916] Purchase Virgin Islands

[1916] First woman House of Representatives

[1917] Wilson's second inauguration

[1917] First regular airmail service begins

[1918] Worldwide influenza epidemic strikes

[1919] League of Nations

[1919] Eighteenth Amendment & liquor banned

[1919] Nineteenth Amendment & women's vote

[1919] Treaty of Versailles rejected

[1921] 29th president Warren G. Harding

[1923] Harding's death & Calvin Coolidge

[1923] Teapot Dome scandal breaks

[1925] Scopes Monkey Trial

[1927] The Spirit of St. Louis, nonstop transatlantic flight

[1929] 31st president, Herbert Hoover

[1929] Stock market crash, Great Depression

[1931] The Star-Spangled Banner

[1932] First woman elected to the U.S. Senate

[1932] First nonstop transatlantic flight by a woman

[1933] Twentieth Amendment (Lame Duck Amendment)

[1933] 32nd president Franklin Roosevelt

[1933] New Deal recovery measures

[1933] Twenty-First Amendment, repealing Prohibition

[1935] Works Progress Administration

[1935] Social Security Act

[1935] FBI under J. Edgar Hoover

[1937] F. Roosevelt's second inauguration

[1938] Fair Labor Standards Act

[1939] World War II

[1941] F. Roosevelt's third inauguration

[1941] Japan attacks Hawaii, Guam

[1941] Germany and Italy declare war on the US

[1942] Allies invade North Africa

[1944] Allies invade France on D-Day

[1945] F. Roosevelt's fourth inauguration

[1945] Yalta conference

[1945] Roosevelt'a death & Harry Truman

[1945] Germany's surrender

[1945] First atomic bomb is detonated

[1945] Potsdam Agreement

[1945] Atomic bomb on Hiroshima & Nagasaki

[1945] Japan's surrender

[1945] Japan sign aboard the USS Missouri

[1945] United Nations is established

[1946] Philippines becomes an independent republic

[1947] Presidential Succession Act

[1947] CIA is established

[1948] Marshall Plan

[1948] Blockade of Berlin

[1949] Truman's second inauguration

[1949] NATO is established

[1949] Soviets end blockade of Berlin

[1950] Korean War(~1953)

[1950] Vietnam War (~1975)

[1951] Twenty-Second Amendment, limiting the president to two terms

[1952] Puerto Rico becomes a U.S. commonwealth

[1952] First hydrogen bomb is detonated

[1953] 34th president, Dwight Eisenhower

[1954] Sen. Joseph R. McCarthy accuses Communists

[1954] Brown v. Board of Education of Topeka, Kans

[1957] Eisenhower's second inauguration

[1958] Explorer I, first American satellite

[1959] Alaska & Hawaii becomes state

[1961] Diplomatic relations with Cuba

[1961] 35th president, John F. Kennedy

[1961] Bay of Pigs invasion

[1961] Freedom Riders

[1962] First U.S. astronaut to orbit Earth

[1962] Cuban Missile Crisis

[1963] Martin Luther King's “I Have a Dream” speech

[1963] President Kennedy is assassinated

[1964] Civil Rights Act

[1965] Johnson's Great Society program

[1965] State troopers attack peaceful demonstrators

[1965] Six days of rioting in Watts

[1966] Miranda rights

[1967] Twenty-Fifth Amendment

[1968] Martin Luther King, Jr., is assassinated

[1968] Sen. Robert F. Kennedy is assassinated

[1969] 37th president,Richard Nixon

[1969] First men to land on the Moon

[1970] Kent State University's antiwar protest

[1971] Twenty-Sixth Amendment, voting age

[1972] Nixon visits Communist China

[1972] SALT I

[1972] Watergate Affair

[1973] Nixon's second inauguration

[1973] Roe v. Wade, legalizes abortion

[1973] Committee investigate Watergate cover-up

[1973] Vice President Spiro T. Agnew resigns & Gerald R. Ford as vice

[1974] Nixon resigns

[1977] 39th president, Jimmy Carter

[1977] Panama Canal treaty

[1978] Sadat and Begin sign Camp David Accord

[1979] Diplomatic ties with mainland China

[1979] Malfunction at Three Mile Island nuclear reactor

[1979] Panama takes control of the Canal Zone

[1979] Iranian students storm U.S. embassy in Teheran

[1980] Moscow Summer Olympics boycott

[1980] Abscam bribery

[1980] Rescue hostages in Iran is aborted

[1981] 40th president,Ronald Reagan

[1981] Hostages held in Iran are released

[1981] President Reagan is shot

[1981] First woman Supreme Court justice

[1982] Equal Rights Amendment to the Constitution passes

[1983] U.S. invades Caribbean island of Grenada

[1985] Reagan's second inauguration

[1986] Space shuttle Challenger explodes

[1987] Public hearings in Iran-Contra investigation

[1987] Reagan's Berlin speech

[1987] Reagan and Gorbachev sign INF treaty

[1989] 41st president, George H. W. Bush

[1989] Exxon Valdez spill 10 million gallons of oil

[1989] Federal bailout of savings and loan institutions

[1989] U.S. forces invade Panama

[1990] Iraqi troops invade Kuwait

[1991] Persian Gulf War

[1991] U.S. and Soviet Union sign START I treaty

[1992] Declare an end to the cold war

[1992] Rodney King & Los Angeles rioting

[1992] U.S troops to Somalia as part of UN

[1992] Pardons to 6 officials in the Iran-Contra scandal

[1993] 42nd president, Bill Clinton

[1993] Bomb explodes in basement World Trade Center

[1993] Branch Davidian compound burns to the ground

[1993] Missile attack against Iraq

[1993] 18 U.S. soldiers are killed in Mogadishu

[1993] North American Free Trade Agreement

[1994] Clinton & Paula Jones

[1995] Bombing of federal building in Oklahoma City

[1995] Full diplomatic relations with Vietnam

[1995] U.S. troops to Bosnia for 12-month peacekeeping

[1995] Partial shutdown of U.S. government

[1996] U.S. bombs military bases in Libya

[1996] Iran-Contra scandal

[1997] Clinton's second inauguration

[1998] President Clinton & Monica Lewinsky

[1998] Attacks on targets in Sudan, Afghanistan and Iraq

[1998] House of Representatives votes to impeach President Clinton

[1999] Senate acquits Clinton

[1999] NATO wages air campaign

[1999] School shooting at Columbine High School

[1999] U.S. and China sign historic trade agreement

[2Thousand] population more than 280 million

[2001] 43rd president George W. Bush

[2001] Hijacked jetliners ram twin towers of World Trade Center

[2001] Air attacks against targets in Afghanistan

[2002] 'Axis of evil' speech

[2003] Space shuttle Columbia explodes

[2003] Iraq war

[2004] Four hurricanes devastate Florida

[2005] Hurricane Katrina

[2006] Population reached 300 million

[2007] First woman Speaker of the House of Representatives

[2007] Virginia Tech dorm shooting

[2008] Lehman Brothers filing for bankruptcy

[2009] 44th president, Barack Obama

[2009] Closing Guantanamo Bay prison in Cuba

[2009] Insurance giant A.I.G 's loss

[2009] Swine flu

[2009] Michael Jackson dies at 50

[2009] First Hispanic Supreme Court justice

[2009] Shooting at the Fort Hood army post in Texas

[2010] An explosion on the Deepwater Horizon oil rig in the Gulf of Mexico