Bihar became a separate state on January 26, 1950, as per the Indian Constitution. However, it was administratively organized as a state in 1960 after integration of princely states.

The Battle of Plassey was fought between Robert Clive (British East India Company) and Siraj-ud-Daulah, the Nawab of Bengal. Though Mir Jafar betrayed Siraj, the battle was primarily against Siraj-ud-Daulah.

National Highway-2 (NH-2), also known as the Grand Trunk Road, passes through Bihar and connects Delhi to Kolkata, serving as one of India's important transport corridors.

The Mahabodhi Temple was constructed during the Gupta period (around 5th-6th century CE). It is one of the oldest brick temples in India and a UNESCO World Heritage Site.

All three—Rajendra Prasad, Jayaprakash Narayan, and Ram Manohar Lohia—were prominent freedom fighters from Bihar who actively participated in the independence movement and Quit India Movement.

The Champaran Satyagraha was about the exploitative indigo cultivation system imposed on farmers by British planters in Bihar. It was Gandhi's first satyagraha in India.

Vaishali is an ancient Buddhist site in Bihar known for its characteristic stone railings and stupas. It is also believed to be the birthplace of Mahavira, the founder of Jainism.

Jharkhand was created as a separate state on November 15, 2000, by separating 18 districts from Bihar. This significantly reduced Bihar's geographical area.

Bakhtiyar Khilji, a Turkish invader, destroyed the famous Nalanda University in the 12th century, burning its libraries and ending its scholarly activities.

Rajendra Chola I, the great Chola emperor, extended his empire northward and conquered Patna during his military expeditions in the 11th century.