Being the leader of the uprising during the war for Mexican Independence
The catholic church wanted to share power with the emperor, so the coronation was an occasion to say in a very public way that the right to make a person king was in the hand of the church, thus making the church itself a very powerful entity who could in fact play a crucial role in the balance power of the period, as it was in many occasion.
The saying a hungry man is an angry man is really true. the whole point of doing what they did was basically to keep the masses mind occupied and to cancel any form or rebellion peacefully.
Answer: Religion and agriculture have been closely related since the beginning of time. In the neolithic times, for example, the development of early Orphic religions based upon fertility and the seasons. Early farmers held religious ceremonies to make a spiritual investment into farming, hoping that their crops would survive.