Untold Arizona: Episode 4 - Due South

We’re heading for Mexico. The first story is a mystery older than Arizona itself. For more than 50 years, historians have been uncertain whether the body of a famed explorer from the Spanish Crown was actually who everyone assumed it to be. And almost two centuries ago, the U.S. fought a gruesome war against Mexico and annexed a vast territory that includes Arizona. So, what does Arizona mean to Mexico nowadays, considering the past, but also the present and future?