The invention of the Bessemer Process.
Answer:
Alexander III of Macedon, commonly known as Alexander the Great, was a king of the ancient Greek kingdom of Macedon and a member of the Argead dynasty. He was born in Pella in 356 BC and succeeded his father Philip II to the throne at the age of 20.
Segregation had been considered constitutional under the lemma "separate but equal" during the Flessy vs. Ferguson case in 1896. The decision enacted by the US Supreme Court stated that the provision of rights guaranteed by the First Amendment to the US Constitution was secured for every US kid, as long as the educational facilities were equal in terms of quality, no matter whether white and black children were separated or not.
Fortunately, the decision subsequently reached in Brown v. Board of Education in 1954 overturned the previous convictions and decisions of the Supreme Court, arguing how separating children solely in terms of race would trigger feelings of inferiority and discrimination in US black kids ans this would, in turn, affect their school performance and hence, it declared segregation to be unconstitutional and urged schools to remove such system.
JFKs speech was against the Berlin Wall. This statement directly translates to “I am a Berliner”. He was protesting the Soviets actions of raising the well and dividing Germany.