Sher Shah Suri was born in Sasaram in Bihar. He was an Afghan ruler who briefly ruled India and is known for his administrative reforms, including the construction of the Grand Trunk Road.

Senuwar is a significant Paleolithic archaeological site in Bihar. It has yielded important evidence of early human habitation and stone tools dating back to the Paleolithic age.

Total production = 60 + 45 = 105 quintals. Total area = 120 + 80 = 200 acres. Average productivity = 105 ÷ 200 = 0.525 ≈ 0.52 quintals per acre.

The Ganga-Sone confluence area is an important geographical feature. The Sone River forms a significant boundary and geographical feature in the region between Bihar and neighboring states.

Kautilya's Arthashastra mentions Pataliputra as the capital of the Mauryan Empire. The text describes the city's administrative organization, fortifications, and importance as a center of power.

The Suez Canal connects the Red Sea to the Mediterranean Sea, providing a crucial shipping route between Europe and Asia. This is an important international trade route with significant global implications.

Koderma district is famous for its rich deposits of mica, coal, and other minerals. It is one of the most mineral-rich districts in Bihar and is an important center for mining and mineral extraction.

Patna Sahib Gurudwara is the birthplace of Guru Govind Singh, the tenth Guru of Sikhism. It is one of the five most sacred Gurudwaras in Sikhism and is located in Patna city.

The British established their first factory in Bihar at Munger. This trading post became an important center for British commercial activities in Eastern India during the colonial period.

The Kosi River, originating in Nepal and flowing through Bihar, is known as the 'Sorrow of Bengal' due to its devastating floods that affect Bihar and Bengal. It is one of the most unpredictable rivers in India.