Answer:
Here's the correct order of the events:
Jimmie Jackson is killed.
John Lewis and Hosea Williams lead a march to Selma.
Martin Luther King, Jr. leads the Selma March.
The marchers turn around at the bridge out of Selma.
The marchers are attacked when they cross the bridge out of Selma.
Lyndon B. Johnson talks to Congress on national television.
The Selma March reaches Montgomery, the capital of Alabama.
Lyndon B. Johnson signs a law protecting black people's right to vote.