Complex sentence: Created in 2002, the winner of Miss Earth Mexico obtains the right to represent the country in the international Miss Earth pageant, although it was not until 2007 that Miss Earth Mexico actually held a national pageant.
Split into simpler sentences: Created in 2002, the winner of Miss Earth Mexico obtains the right to represent the country in the international Miss Earth pageant. Although it was not until 2007 that Miss Earth Mexico actually held a national pageant.