Wind is the horizontal movement of air
        
             
        
        
        
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Answer:
 was a landmark decision of the U.S. Supreme Court that upheld the constitutionality of racial segregation laws for public facilities as long as the segregated facilities were equal in quality – a doctrine that came to be known as "separate but equal".
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Roman Republic became dictatorship in the event of abolishment of monarchy back in 501 BC
Explanation:
The Roman empire was under monarchy ever since ages, which later to be divided by the power of King into two praetors. This division was done annually, which later to turn as a threat in order to re-establish monarchy. 
This posed the necessity to develop a dictatorship as proposed and intel by the Senate. Praetor maximus or the dictator was hence made the superior position and Titus Lartius in 501 BC is known to be the first to acquire the position, leaving Roman Republic to dictatorship.