Complex sentence: Los Negros have been involved in warring with Los Zetas in the Nuevo Laredo region, which is crucial to drug traffickers due to the amount of commerce which passes through the region into the United States, 40% of Mexican exports totaling 9,000 trucks daily.
Split into simpler sentences: Los Negros have been involved in warring with Los Zetas in the Nuevo Laredo region. The Nuevo Laredo region is crucial to drug traffickers due to the amount of commerce which passes through the region into the United States, 40% of Mexican exports totaling 9,000 trucks daily.