Answer:
Option: witnessed the birth of the modern civil rights movement.
Explanation:
The experiences in World War II lead African American to show their support in America and abroad as soldiers. The events of World War II ushered in a new era of civil rights movements. The civil rights organizations campaigned for African-American rights and challenged Jim Crow laws. World War II led to bring racial reform by removing injustice towards them and discrimination. The civil rights movement helped African American to gain their rights in America in the 1950s and 1960s.