The correct answer is option E: Lyndon Johnson.
The US president that worked with civil rights leaders to secure equality and liberty was Lyndon Johnson. Many presidents tried to achieve this goal, however, Johnson was the only one who was able to pass the official Civil Rights Act.
He worked to protect individuals and people from repression because he promoted the expansion of personal rights, liberty and the pursuit of freedom.
A Cambodia farmer is required to sell his crops locally rather than exporting them
A1. Brown v. Board of education
A2.Tinker v. Des Moines
A3. The employees will win because the constitution guarantees the right to speak freely on a cell phone.
Hope this helped!