Complex sentence: Mexico border lies Matamoros, Tamaulipas, a city with a population of 500,000 people and a major site of the Mexican War of Independence, the Mexican Revolution, and the French Intervention.
Split into simpler sentences: Mexico border lies Matamoros, Tamaulipas, a city with a population of 500,000 people. It was a major site of the Mexican War of Independence, the Mexican Revolution, and the French Intervention.