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ISO 3166 code of Bihar is "BH".

- Bihar was formed on March 22, 1912 after partition of Bengal Presidency.

Chhath Puja: The most important festival in Bihar is Chhath Pooja, which is performed in honour of the Sun and his wife Usha to express gratitude for the blessings of life on earth and to make specific requests. In its own way, Chhath Pooja is exceptional. The only celebration that recognises and celebrates the sun setting is this one. There is no idolatry and the focus is solely on nature. This has a strong focus on maintaining clean surroundings and homes, protecting rivers and the natural world, and purifying the body and mind.
Makarsakranti: It is the first day when the sun enters the constellation Makara (Capricorn), signalling the end of the winter solstice and the beginning of longer days.
Basant Panchami: The festival of Basant Panchami honours the goddess Saraswati, an ancient deity of learning, language, music, and all the arts. She represents all forms of creative force and energy since she is the anifestation of Brahma's energy. The time of year and the celebration are also a reflection of the agricultural fields that are ripening with mustard crop blooms, which Hindus identify with Saraswati's preferred hue of yellow. People exchange food and sweets that are yellow in hue while wearing yellow saris, clothing, or accessories. Some people prepare their yellow rice, add saffron to it, and then eat it as part of a lavish feast.

The Indian state of Bihar is well-known for both its lengthy history and for welcoming its uncomplicated, straightforward populace that enjoys a wide range of cuisine. Therefore, the people of this state are sensible, and they are well recognised throughout the nation for their friendliness. This distinction goes farther than this. They are always foodies. Due to its distinctiveness in many ways, Bihari food is very well-known throughout the whole northern part of the nation. The state's culinary offerings are well renowned throughout the nation due to its diverse culture. The world is aware of the state's great wealth in agriculture and other resources, but it also admires the state's varied gastronomic culture.
Litti Chokha is one of the famous food of Bihar.Litti is made of wheat and Chana (gram) sattu mixed with spices, round shaped cooked nad dipped in ghee. The crispy surface and textural qualities of Litti make it a culinary treat. Chokha is made by mashing boiling vegetables (like potatoes, brinjal, and tomatoes), adding spices, and chopping other vegetables like onion and garlic.
Kadhi Bari is a famous dish from Bihar. Besan or gramflour is the main ingredient. It is generally made in summer. It is usually served with steamed.

Nalanda: Nalanda is one of the famous tourist spot in Bihar. Nalanda University is probably the oldest university in India. Few famous places to visit here are Rajgir (the first capital of the kingdom of Magadha), Nalanda Archaeological Museum, Hiuen Tsang Memorial, Vishwa Shanti Stupa, Jalmandir, Pawapuri, Bimbisara Jail, Vulture Peak, Hot Spring (Rajgir), Ajatsatru Stupa, Jarasandh Ka Akhara, Son Bhandar Caves, International Convention Centre at Rajgir etc.
Patna: Guru Gobind Singh, who was the 10th Sikh Guru, was born in here. In his memory, Takht Sri Harmandir Patna Sahib Gurudwara is made. Few famous places to visit here are Takht Sri Harmandir Patna Sahib, Golghar, Patan Devi temple, Mahavir temple, Kumhrar Park, Shitala Devi temple, Gandhi Museum, Patna Museum, Choti Dargah, Khuda Bakhsh Oriental Public Library, Buddha Smriti Park, Ganga Arti at Gandhi Ghat etc.
Gaya: - Gaya is one of the most famous places of Bihar. Few famous places to visit here are Bodhgaya, Magla Gauri Shrine, Bodhi Tree, Muchalinda Lake, Mahabodhi Temple, Dungeshwari Cave Temples, Chinese Temple and Monastery, Thai Temple and Monastery, Vishnupad Temple, Barabar Caves, Bodhgaya Archaeological Museum, Royal Bhutan Monastery etc.
Vaishali: Few famous places to visit here are Ashoka Pillar, Licchvi Stupa (Mud Stupa), Shanti Stupa, Raja Vishal's Garh, Vaishali Museum, Bhagwan Mahaveer Janma Smarak, Basokund etc.

- Mahabodhi Temple: It is located in Bidhgaya, Bihar. It is known as the place where the Buddha is said to have attained enlightenment.
- Nalanda Mahavihara: It is located in Nalanda district of Bihar.