Simplify the following text for a Grade 5 native English-speaking person.
Original: Hoeven served as the 31st Governor of North Dakota , serving from December 15 , 2000 to December 7 , 2010 .
Simplified: He was born in Bismarck , North Dakota . He took office as Governor on December 15 , 2000 , and left office on December 7 , 2010 .