Main tribe of Assam is

Bodo
Miri
Mikir
Rabha

The main tribe of Assam is Bodo. Bodos are an ethnic group native to the Brahmaputra Valley in northeastern India. They are the largest tribal group in Assam, accounting for about 12% of the state’s population. Bodos are also found in the neighboring states of Arunachal Pradesh, Nagaland, Manipur, and Meghalaya.

Bodo is a Tibeto-Burman language spoken by the Bodo people. It is the official language of the Bodoland Territorial Council, an autonomous region in Assam. Bodo is also spoken in the neighboring states of Arunachal Pradesh, Nagaland, Manipur, and Meghalaya.

Bodo culture is rich and diverse. Bodos are known for their traditional music, dance, and art. They also have a rich oral tradition. Bodos are predominantly Hindu, but there are also a significant number of Christians and Muslims among them.

Bodo society is traditionally matrilineal, meaning that property and inheritance are passed down through the female line. Bodo villages are typically headed by a chief, who is elected by the village elders.

Bodo people have a long and proud history. They were once a powerful kingdom, but they were conquered by the British in the 19th century. Since then, Bodos have been fighting for their rights and autonomy. In 2003, the Bodoland Territorial Council was created, giving Bodos a measure of self-government.

Bodo people are a resilient and determined people. They have overcome many challenges in their history, and they continue to fight for their rights and autonomy. Bodos are a proud people with a rich culture, and they play an important role in the fabric of Assamese society.

The other options are incorrect because they are not the main tribe of Assam. Miri, Mikir, and Rabha are all tribes that are found in Assam, but they are not as numerous as the Bodo people.