Why was the Mexican Cession a significant event? (1 point) Responses It united different cultural groups living in western areas. It united different cultural groups living in western areas. It intensified the debate over the expansion of slavery. It intensified the debate over the expansion of slavery. It created a temporary southern border. It created a temporary southern border. It led to the development of canal systems to move goods. It led to the development of canal systems to move goods. Question 13 #13

The Mexican Cession was a significant event because it intensified the debate over the expansion of slavery.