Jainism is a non-theistic Indian religion and philosophical system originating in Iron Age India. Jains compose 0.4% (around 4.2 million) of India's population, and are concentrated in the states of Gujarat, Karnataka, Maharashtra, and Rajasthan.
In short, it soon became apparent that a new stage of life â the teenage phase â was becoming a reality in America. American adolescents were displaying traits unknown among children and adults. Although the word teenager did not come into use until decades later, the teenage mindset dawned in the 1920s.
According to Etymology Online, the use of kid to refer to a human child was established in informal English usage by 1812, but was used as slang (not sure what the difference is in connotation here between informal and slang) as early as 1590.