Put the events into the order in which they happened

1	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
2	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
3	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
4	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
5	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
6	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
7	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
8	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
9	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.
10	??? Slaves work on plantations in the south. The Civil War begins. The Ku Klux Klan is founded to terrorize and kill blacks. The Supreme Court bans segregation in schools. The stock market crashes and the Great Depression begins. Abraham Lincoln is elected President. Barack Obama becomes the first African American president. Congress passes the Civil Rights Act. European traders bring slaves to America. Blacks and whites take part in the March on Washington.