The year-long Montgomery Bus Boycott, in Montgomery, Alabama, didn't directly cause the Supreme Court to declare segregation in public transportation unconstitutional, although the boycott gave the court a compelling reason to affirm the US District Court decision in favor of the African-American plaintiffs.
Most of the Warren Court was dedicated to upholding the Fourteenth Amendment Equal Protection Clause that states: "nor shall any state deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws."
De facto segregation, which is caused by circumstances rather than law.
This 1803 decision marked the first time the United States Supreme Court declared a federal law unconstitutional. Chief Justice John Marshall wrote the opinion for the court. He held that it was the duty of the judicial branch to determine what the law is. His opinion established the power of judicial review-that is, the court's authority to declare laws unconstitutional.
If your asking what case caused segregation, the case of Plessy v. Ferguson created the "Separate but Equal" doctrine which gave blacks and whites equal facilities, but they were separate. This case created segregation. Just in case you are asking for what case started desegregation, it started with the case of "Brown v. Board of Education" where it was determined that the Separate but Equal doctrine was unconstitutional and demanded that schools must immediately desegregate schools. PS. The case of "Plessy v. Ferguson" was used as a precedent in the case "Brown v. Board of Education". :)
de jure segregation
The 1939 invasion of Poland caused Britain to declare war on Germany, which started WWII.
Pearl Harbor.
Segregation based on law is de juresegregation; when not mandated by legislation, but caused by social, economic or other circumstances, it is known as de facto segregation.
The Japanese bombing the U.S fleet at Pearl Harbour, Hawaii on the 7th December 1941 is what ultimatley caused the U.S to declare war during world war 2.
De Jure Segregation is racial separation which is forced by specific laws. De facto segregation is generally caused by socioeconomic conditions, not by statute.
native american uprisings
they wouldn't listen to him
It caused Germany alot of pain The country was corrupted after such violence, segregation and racism against jews.