What is that suppose to mean?-
Answer:
1)Jim Crow laws were state and local laws that enforced racial segregation in the Southern United States.
2) became the key strategist in the effort to end racial segregation, in particular meticulously challenging Plessy v. Ferguson , the Court-sanctioned legal doctrine that called for “separate but equal” structures for white and blacks.
3)Governor Orval Faubus ordered the Arkansas National Guard to prevent African American students from enrolling at Central High School. Central High was an all white school. ... Governor Faubus defied this decision.
4) Montgomery Improvement Association
5)Martin Luther King Jr.
Explanation:
Sonar uses sound to detect objects underwater. As well as using sonar, Ballard searched for the Titanic's trail of debris.
Explanation: