Complex sentence: Since farming has not been employment intensive, younger generations tend to emigrate to Aguascalientes or the United States for better opportunities, in specific to the California counties of Orange, Riverside, San Bernardino, Los Angeles and Ventura, as well as Dallas County in Texas.
Split into simpler sentences: Since farming has not been employment intensive, younger generations tend to emigrate to Aguascalientes or the United States for better opportunities. In specific to the California counties of Orange, Riverside, San Bernardino, Los Angeles and Ventura, as well as Dallas County in Texas.