Ashoka's edicts were inscribed on stone pillars (sarnath pillar, etc.) and rock surfaces throughout his empire. Several of these edicts have been discovered in Bihar and are now protected archaeological monuments.

Gaya is historically significant as the site of Bodh Gaya, where Buddha attained enlightenment. The district is thus referred to as the 'Land of Buddha' and is a major pilgrimage destination.

The Champaran Satyagraha (1917) was a non-violent movement against the exploitation of indigo farmers by British planters in East Champaran district. It was Gandhi's first major satyagraha in India.

The Ganges River enters Bihar from the west (from Uttar Pradesh) and flows through the state before exiting towards the east into West Bengal. It is a major geographical feature of Bihar.

Darbhanga is renowned as the 'Land of Poets' due to its rich cultural heritage and contribution to Sanskrit literature and Maithili poetry.

The Kosi River is called the 'Sorrow of Bihar' because it frequently changes its course and causes devastating floods in North Bihar.

Nalanda University was one of the most important centers of Buddhist learning and attracted scholars from across Asia.

Madhubani painting is a traditional art form that originated in the Mithila region of Northern Bihar, particularly from Madhubani district.

Area = Length × Breadth = 240 × 180 = 43,200 square meters. Converting to hectares: 43,200 ÷ 10,000 = 4.32 hectares. (1 hectare = 10,000 sq.m)

The Suez Canal connects the Mediterranean Sea with the Red Sea and is approximately 193 kilometers long. (Note: This is general knowledge relevant to BPSC GS papers)