Discuss the roles of lumbini to popularize Nepal in the world. very long answer

Lumbini, The Holy Abode of Buddhism. ... Regarded as the holiest place for Buddhists, Lumbini in Nepal's south-western Terai region is the place where the apostle of peace Lord Gautama Buddha was born in 623 B.C.

answer; collective security;

it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.