Simplify the following text for a Grade 12 native English-speaking person.
Original: The Universal Forum of Cultures Monterrey 2007 was an international civil-society event that took place in the city of Monterrey , Mexico , starting on September and ending in December of mentioned year .
Simplified: The Universal Forum of Cultures Monterrey 2007 is an international civil-society event that will take place in the city of Monterrey , Mexico .