How many half-lives did the element go through?

In upholding louisiana's separate car act, the supreme court claimed thatsegregation was not the same as discriminationthe fourteenth amendment did not apply to southern statesdiscrimination was necessary in order to maintain public ordero segregation was unconstitutional based on the fourteenth amendment

Which two following best identify the central themes of this speech in the passage the man in the arena

The picture above depicts the berlin wall which divided in half from the 1960 to 1989 which type of boundary was the berlin wall