Central American religion is home to various cultural beliefs originated from Spanish and Indian Culture.
The ethnicity of "Mexican" is believed to originate from European Spanish and Central Native descent, traced to Spain exploration throughout the 1700s-1800s.
This caused a shared blend of cultures and hybrid beliefs in both cultures, having Spain introducing their boy Jesus with their Catholic roots and Central America having monotheistic beliefs of sacrifices and multiple Gods.
This is like basic facts on the history to your question.
The Varna system in Dharma-shastras divides society into four varnas (Brahmins, Kshatriyas, Vaishya and Shudras). Those who fall out of this system because of their grievous sins are ostracised as outcastes (untouchables) and considered outside the varna system. The system which divides Hindus into rigid hierarchical groups based on their karma (work) and dharma (the Hindi word for religion, but here it means duty) is generally accepted to be more than 3,000 years old.
How did caste come about?
Manusmriti , widely regarded to be the most important and authoritative book on Hindu law and dating back to at least 1,000 years before Christ was born, "acknowledges and justifies the caste system as the basis of order and regularity of society".
The caste system divides Hindus into four main categories - Brahmins, Kshatriyas, Vaishyas and the Shudras. Many believe that the groups originated from Brahma, the Hindu God of creation. At the top of the hierarchy were the Brahmins who were mainly teachers and intellectuals and are believed to have come from Brahma's head. Then came the Kshatriyas, or the warriors and rulers, supposedly from his arms. The third slot went to the Vaishyas, or the traders, who were created from his thighs. At the bottom of the heap were the Shudras, who came from Brahma's feet and did all the menial jobs.
The main castes were further divided into about 3,000 castes and 25,000 sub-castes, each based on their specific occupation.
Outside of this Hindu caste system were the achhoots - the Dalits or the untouchables.
How does caste work?
For centuries, caste has dictated almost every aspect of Hindu religious and social life, with each group occupying a specific place in this complex hierarchy.
Rural communities have long been arranged on the basis of castes - the upper and lower castes almost always lived in segregated colonies, the water wells were not shared, Brahmins would not accept food or drink from the Shudras, and one could marry only within one's caste.
The answer is the invention of the wheel. The invention of the wheel was not a factor of immigration.
What are we suppose to fill in the box about facts or statements?
A current example of cultural diffusion is that carried out by the association Contraluz, founded some twenty-five years ago, in the city of Avignon (France). There Spaniards of origin, who had to migrate from that country can take Spanish classes and promotion of gatherings to practice it, exhibitions of painting and photography, lectures on the history and the current situation of Spain and the Ibero-American countries, screening of Spanish films and Latin American, promotion of music and dance, from the sevillanas and flamenco, to the Latin rhythms of the other part of the Atlantic.