The Ghaghara River forms the boundary between Bihar and Uttar Pradesh in the western and northern parts of Bihar. It is a major tributary of the Ganges River.

Chanakya (Vishnugupta) was associated with Takshashila, though he worked closely with the Mauryan court at Pataliputra in Bihar. He was a political theorist and authored the Arthashastra.

The Mahabodhi Temple Complex in Bodh Gaya was inscribed as a UNESCO World Heritage Site in 2002. It is one of the oldest brick temples in India and is of great Buddhist significance.

While Bihar has significant agricultural, mining, and sugar production sectors, Software Technology Parks are not a major industry in Bihar. The state is primarily focused on traditional industries and agriculture rather than IT sectors.

Ashoka's rock and pillar edicts contain his administrative policies, moral teachings, and principles of governance, serving as primary sources for understanding his rule.

The Kosi River, originating in Nepal, is a major tributary of the Ganges and flows through Bihar. It is known as the 'Sorrow of Bihar' due to frequent floods.

Rajgir (Rajagriha) was the capital of the ancient Magadha kingdom, one of the most powerful states in ancient India.

The Mauryan Empire ruled for approximately 137 years (322-185 BCE), with its capital at Pataliputra. Calculation: 322 BCE to 185 BCE = 137 years.

The Mahabharata contains references to Magadha as a powerful and influential kingdom in ancient India, particularly during the Vedic and post-Vedic periods.

Mahavira, the 24th Tirthankara and founder of Jainism, was born in Vaishali. The city also held the Second Buddhist Council.