According to Jain legends, there were 24 Tirthankaras. Among these, the first was Rishabh Dev, the 23rd Tirthankar Parshvanath, the 24th Tirthankar Mahavir Swami.

Tripitaka, these sacred Buddhist texts comprise the teachings of Buddha, known collectively as Dharma. Tripitaka, these sacred Buddhist texts comprise the teachings of Buddha, known collectively as Dharma.

The Third Buddhist council was convened in about 250 BCE at Asokarama in Pataliputra, supposedly under the patronage of Emperor Ashoka.

The Digambara sect is related to Jainism.

Buddha's Birth-    Lotus & Bull 
The Great Departure (Mahabhinishkramana) -    Horse 
Enlightment (Nirvana )     - Bodhi Tree 
First Sermon (Dhammachakraparivartan)    - Wheel
Death (Parinirvana) -    Stupa

Mahavira died in Pava in 468 BC.

The first Buddhist Council was held soon after the death of the Buddha, dated by the majority of recent scholars around 400 BCE, under the patronage of the king Ajatashatru with the monk Mahakasyapa presiding, at Sattapanni caves Rajgriha (now Rajgir).

Maurya - 322 and 185 BCE.
Kanv - 75 BCE to 30 BCE
Kushan - 30 CE to  375 CE
Gupta - mid-to-late 3rd century CE to 543 CE.

Mauryan emperor 'Ashoka' has called himself 'Devnam Priyadarshi' in his inscriptions.

In 305 BC Chandragupta defeated the then Greek ruler Seleucus Nicator. Seleucus Nicator established matrimonial alliance by marring his daughter Helena to Chandragupt Maurya.