Complex sentence: Three years before the attack took place, Colombia reported one of the highest rates of acid attack s per capita in the world; nonetheless, there was not an effective law in place until Ponce de León's campaign took off in the months after her attack.
Split into simpler sentences: Three years before the attack took place, Colombia reported one of the highest rates of acid attack s per capita in the world. However, there was not an effective law in place until Ponce de León's campaign took off in the months after her attack.