Simplify the following text for a Grade 7 native English-speaking person.
Original: Zachary Taylor ( November 24 , 1784 â `` July 9 , 1850 ) was the 12th President of the United States ( 1849-1850 ) and an American military leader .
Simplified: Zachary Taylor ( November 24 , 1784 - July 9 , 1850 ) was the 12th President of the United States .