what is the origin of the last religion mentioned above?
Around 500 BCE.
Jainism
Jainism (), traditionally known as Jain Dharma, is an ancient Indian religion. Jain dharma traces its spiritual ideas and history through a succession of twenty-four leaders or "tirthankaras", with the first being Rishabhanatha or also known as Adinath bhagwan of this era, whom the Jain tradition holds to have lived millions of years ago, the twenty-third "tirthankara" Parshvanatha whom historians date to 8th or 7th century BCE, and the twenty-fourth "tirthankara," Mahāvīra around 500 BCE. 
varanasi is the oldest city in the world Varanasi is a major religious hub in India, it is the holiest of the seven sacred cities ("Sapta Puri") in Hinduism and Jainism what is the meaning of its name? Its name is derived from two Ganges tributaries - Varuna and Assi apart from this city, which are the other 6 sacred cities? Ayodhya, Mathura, Haridwar, Kanchipuram, Ujjain, Dwarka
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Jainism [SEP] Introduction
Jainism (), traditionally known as Jain Dharma, is an ancient Indian religion. Jain dharma traces its spiritual ideas and history through a succession of twenty-four leaders or "tirthankaras", with the first being Rishabhanatha or also known as Adinath bhagwan of this era, whom the Jain tradition holds to have lived millions of years ago, the twenty-third "tirthankara" Parshvanatha whom historians date to 8th or 7th century BCE, and the twenty-fourth "tirthankara," Mahāvīra around 500 BCE. Jains believe that Jainism is an eternal "dharma" with the "tirthankaras" guiding every cycle of the Jain cosmology. The main religious premises of the Jain dharma are "ahiṃsā" (non-violence), "anekāntavāda" (many-sidedness), "aparigraha" (non-attachment) and "asceticism" (abstinence from sensual pleasures).