Why is it possible to use physical properties to sperate a mixtuere

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

Explain how the movement of tectonic plates causes the development of different landforms and naturak disasters

What are the 28 countries in the eu?