1. what do mexicans believe the dead do on the day of the dead?

Upon dying, a person was believed to travel to Chicunamictlán, the Land of the Dead. Only after getting through nine challenging levels, a journey of several years, could the person’s soul finally reach Mictlán, the final resting place. In Nahua rituals honoring the dead, traditionally held in August, family members provided food, water and tools to aid the deceased in this difficult journey. This inspired the contemporary Day of the Dead practice in which people leave food or other offerings on their loved ones’ graves, or set them out on makeshift altars called ofrendas in their homes.

Explanation:

i would think it's industries and hydroelectric power

observing traffic laws in exchange for driving on the highway.