Question: How many cultural/linguistic divisions are there in the tribe of which Sacajawea was a member?

Context paragraphs:
East India: East India is a region of India consisting of the Indian states of Bihar, Jharkhand, West Bengal, Odisha and also the union territory Andaman and Nicobar Islands.  West Bengal's capital Kolkata is the largest city of this region.  The Kolkata Metropolitan Area is the country's third largest.  Among these states, Bihar is considered to be a part of North India as well.  The state of West Bengal share many cultural and linguistic characteristics with Bangladesh.  Together with Bangladesh, West Bengal formed the ethno-linguistic region of Bengal before partition in 1947.

Novi Sad Agreement: The Novi Sad Agreement (Serbo-Croatian Latin: "Novosadski dogovor", Cyrillic: Новосадски договор) was a document composed by 25 Serbian, Croatian and Bosnian writers, linguists and intellectuals to build unity across the ethnic and linguistic divisions within Yugoslavia, and create the Serbo-Croatian language standard.

Dai Mirdad (Hazara tribe): The Dai Mirdad are a tribe of the Hazara people, living largely in Dara-i-Suf District, Samangan Province, Afghanistan.  The tribe is known for having asismilated many cultural features from neighboring Uzbek and Tajik populations.

Ionians: The Ionians ( ; Greek: Ἴωνες , "Íōnes", singular Ἴων , "Íōn") were one of the four major tribes that the Greeks considered themselves to be divided into during the ancient period; the other three being the Dorians, Aeolians, and Achaeans.  The Ionian dialect was one of the three major linguistic divisions of the Hellenic world, together with the Dorian and Aeolian dialects.

Shoshone: The Shoshone or Shoshoni ( or ) are a Native American tribe with four large cultural/linguistic divisions:

Cultural framework: Cultural framework is a term used in social science to describe traditions, value systems, myths and symbols that are common in a given society.  A given society may have multiple cultural frameworks (for example, United States society has different cultural frameworks for its white and African American populations).  Usually cultural frameworks are mixed; as certain individuals or entire groups can be familiar with many cultural frameworks.

Tamyen people: The Tamyen people (also spelled as "Tamien", "Thamien") are one of eight linguistic divisions of the Ohlone (Coastanoan) people groups of Native Americans who lived in Northern California.  The Tamyen lived throughout the Santa Clara Valley.  The use of the name Tamyen is on record as early as 1777, it comes from the Ohlone name for the location of the first Mission Santa Clara (Mission Santa Clara de Thamien) on the Guadalupe River.  Father Pena mentioned in a letter to Junipero Serra that the area around the mission was called "Thamien" by the native people.  The missionary fathers erected the mission on January 17, 1777 at the native village of So-co-is-u-ka.

Demographics of Brunei: The demographic features of Brunei include population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.  Like neighbouring countries, Brunei is a Malay-dominated country.  Many cultural and linguistic differences make Brunei Malays distinct from the larger Malay populations in nearby Malaysia and Indonesia, even though they are ethnically related and share the Muslim religion.

Sacajawea (novel): Sacajawea is a massive (over 1300 pages) historical fiction novel about the life of Sacajawea, noted Shoshone Indian travel guide of Lewis and Clark.  It was written by Anna Lee Waldo and published in 1978.  It took Waldo ten years to research and write the novel.  "Sacajawea" is Waldo's first book.

Hamazkayin: Hamazkayin (Armenian: Համազգային ), short for Hamazkayin Armenian Educational and Cultural Society, is a major cultural organization of the Armenian Diaspora, with a presence in every significant Armenian community worldwide.  In addition to organizing cultural events in local Armenian communities, the Hamazkayin runs three schools, publishes books through its printing press, maintains bookstores, publishes a monthly literary magazine, "Pakin" (Armenian: Բագին ), and organizes the "Hamazkayin Forum".  Hamazkayin enjoys the support of a wide segment of the Armenian community and encourages active participation to the events sponsored by the community.  Hamazkayin sponsors and organizes many cultural events, such as concerts by renowned artists, scientific seminars, film festivals, literary lectures and book reviews.  In the United States, the Hamazkayin Armenian Educational and Cultural Society was established as a non profit organization in 1970.

Supporting paragraphs: Sacajawea (novel) Shoshone
Answer: four