Simplify the following text for a Grade 6 native English-speaking person.
Original: Oscar Benjamin Cintas , ( b. Sagua la Grande , Cuba , 1887 ; d. New York City , N.Y. 1957 ) was a prominent sugar and railroad magnate who served as Cubaâ s ambassador to the United States from 1932 until 1934 .
Simplified: Oscar Benjamin Cintas , ( b. Sagua la Grande , Cuba , 1887 ; d. New York City , N.Y. 1957 ) was an important sugar and railroad magnate . He served as Cubaâ s ambassador to the United States from 1932 until 1934 .