Complex sentence: McAllen has been transformed into a major regional retail destination for South Texas and Northern Mexico.Tthis sector has become the driving force in McAllen's economy, growing a staggering 138% since, to over $3 billion and employing 27% of the workforce.
Split into simpler sentences: McAllen has been transformed into a major regional retail destination for South Texas and Northern Mexico. This sector has become the driving force in McAllen's economy, growing a staggering 138% since, to over $3 billion and employing 27% of the workforce.