Which of the following events in the Civil Rights movement preceded the Civil Rights Act of 1964? A. The Supreme Court ruled that segregation in public schools was unconstitutional
B. Rosa Parks refused to give up her seat to a White passenger on a bus in Alabama.
O
C. Dr. Martin Luther King delivered his "I Have a Dream" speech at The March on Washington.
о
D
all of the above

D . all of the above

Explanation:

Civil Rights Act of 1964 is the landmark law that was the big legal progress in the treatment of African Americans in the US, as well as other minorities. It has outlawed discrimination in various aspects, including segregation, employment, voting, and education.

It has been proceeded by many acts of protest, rebellion, and fight, especially from the African American community.

In the landmark case, Brown v. Board of Education of Topeka, Oliver Brown sued because the school refused to enroll his daughter based on the segregation laws. Based on the Fourteenth Amendment, this was a violation. Finally, The Supreme Court ruled it was unconstitutional and established racial segregation in public educational facilities.Segregation was also established in transport, and African-American citizens did not have the right to use the same seats or buses as white people. In 1955, Rosa Parks refused to stand up from her seat for the white man and with this act of civil disobedience, she sparked the riots and boycotts. Martin Luther King Jr. was one of the main faces of the Civil Rights movement. He did many amazing things for the movement and against segregation. His speech at Lincoln Memorial during the Mach on Washington (protest for the rights of African Americans) is one of the key events in history.

All of these combined sparked enough anger and courage in people of the US and finally, everyone agreed changes had to be made.

The answer is crop yield.