Question: With little outside influence, the Pashtun culture is used mostly in what type of areas?

Context paragraphs:
Pathans of Kashmir: Pathans in Kashmir (also called Kashmiri Pathans) include Pashtun people (Pathans)who still follow Pashtunwali and speak Pashto as their mother-tongue who have settled in the Indian state of Jammu and Kashmir region of South Asia.  While there are also a large number of Muslims throughout Kashmir who claim Pashtun ancestry through forefathers who migrated to the region under the Afghan rule in Kashmir.  While exact numbers are hard to determine, cursory estimates put the number of these Pathans or Pashtuns above 100,000.  Many of these Pathans have over time absorbed Kashmiriyat and use Kashmiri language as their first language , although some people following Pashtunwali customs and aspects of Pashtun culture and Pashto are still notably practiced among the community, but are largely few in number and reside in certain areas only.

Pashtun culture: Pashtun culture (Pashto: پښتني هڅوب‎ ) is based on Islam and Pashtunwali, which is an ancient way of life, as well as speaking of the Pashto language and wearing Pashtun dress.  The culture of the Pashtun people is highlighted since at least the time of Herodotus (484-425 BC) or Alexander the Great, when he explored the Afghanistan and Pakistan region in 330 BC.  The Pashtun culture has little outside influence, and, over the ages, has retained a great degree of purity.

Pashtunwali: Pashtunwali (Pashto: پښتونوالی‎ ) or Pakhtunwali is a non-written ethical code and traditional lifestyle which the indigenous Pashtun people follow.  It is a system of law and governance that is preserved and still in use today, mostly in the rural tribal areas.  Its meaning may also be interpreted as "the way of the Pashtuns" or "the code of life".  Pashtunwali is widely practiced among Pashtuns, especially among the non-urbanized Pashtuns in the countryside.  In addition to being practiced by members of the Pashtun diaspora, it has been adopted by some non-Pashtun Afghans and Pakistanis that live in the Pashtun regions or close to the Pashtuns, who have gradually become Pashtunized over time.  During the Pashtun-dominated Taliban regime, Pashtunwali was practiced throughout the Islamic Emirate of Afghanistan in conjunction with the Taliban's interpretation of Deobandi Islam.

Pashto Academy: Pashto Academy (Pashto: پښتو اکېډمي‎ ) is a language regulatory institution based at the University of Peshawar in Peshawar, Khyber Pakhtunkhwa, Pakistan responsible for the standardisation, advancement, and promotion of Pashto language.  It was established in 1955 with the support of the Government of Khyber Pakhtunkhwa, with Maulana Abdul Qadir serving as its first director.  It is a research and publication institution with a focus on Pashto linguistic development and research.  Areas studied and researched by the academy include Pashtun culture, literature, history, and the arts.

Pashtunistan: Pashtūnistān (Pashto: پښتونستان‎ ; also transliterated Pakhtūnistān; lit.  "homeland of the Pashtuns") is the geographic region inhabited by the indigenous Pashtun people of modern-day Afghanistan and Pakistan, wherein Pashtun culture, language, and national identity have been based.  Alternative names historically used for the region included ""Afghānistān"" and ""Pashtūnkhwā"", since at least the 3rd century CE onward.  Pashtunistan borders Punjab to the east, Persian and Turkic speaking regions to the west and north, Kashmir to the northeast, and Balochistan to the south.

Loy Kandahar: Loy Kandahar (Pashto: لوي کندهار‎ , lit.  "Great Kandahar") is a historical and cultural region of Afghanistan, comprising the modern Afghan provinces of Kandahar, Helmand, Urozgan, Farah, Zabul and Quetta.  Loy Kandahar is vaguely defined by a common culture and history that is connected to the local indigenous tribes that reside in the region.  Some people may refer to these areas as being under the "Kandahari cultural sphere of influence".  Particular styles of clothing, articles of clothing, turban styles, turban cloth colors, dialects of Pashto language, etc. may sometimes be associated with specific tribes indigenous to Loy Kandahar and thus integrate themselves into regional culture.  For instance, a Pashtun tribesman from Loy Kandahar may quickly recognize a Pashtun from Loya Paktia based upon his turban (or lungee) style and color.  Likewise, a Pashtun from Loya Paktia may recognize someone from Loy Kandahar based upon his unique style of collarless kameez (shirt) with specific embroidered patterns on the front.  There are many subtle and intricate cultural indicators of this type that are not recorded in any known written history but simply known and observed by the tribesmen of the various Pashtun regions of Afghanistan and Pakistan.

Formalism (literature): Formalism is a school of literary criticism and literary theory having mainly to do with structural purposes of a particular text.  It is the study of a text without taking into account any outside influence.  Formalism rejects (or sometimes simply "brackets", "i.e.", ignores for the purpose of analysis) notions of culture or societal influence, authorship, and content, and instead focuses on modes, genres, discourse, and forms.

Igbo culture: Igbo culture (Igbo: Ọmenala ndị Igbo ) are the customs, practices and traditions of the Igbo people of southeastern Nigeria.  It comprises archaic practices as well as new concepts added into the Igbo culture either by cultural evolution or by outside influence.  These customs and traditions include the Igbo people's visual art, music and dance forms, as well as their attire, cuisine and language dialects.  Because of their various subgroups, the variety of their culture is heightened further.

Anti-Pashtun sentiment: Anti-Pashtun sentiment refers to fear, dislike, or hostility towards Pashtun people or anything related to Pashtun culture in general.  It can sometimes be broadly construed as a subcategory of anti-Pakistan sentiment or anti-Afghan sentiment as Pashtuns are the second largest ethnic group in Pakistan and the largest in Afghanistan.  Anti-Pashtun sentiment has been present in South-Central Asia at various points in history among different non-Pashtun groups, for various political and historical reasons.

List of Pashtuns: The following is an incomplete list of notable Pashtuns.  The list includes those born to parents who are both Pashtuns and those who have mixed Pashtun ancestry.  Pashtun people are usually defined by speaking the East Iranian dialects of Pashto and related dialects (i.e. Waneci, Wazirwola) as their mother tongue, and/or Practice Pashtunwali (culture); however, there exist many Pashtun communities that assimilated and/or shifted to speaking another language but trace their ancestral roots to Pashtun tribes.  In several cases, patrilineal lineage is counted for Pashtun ancestry according to Pashtun culture regardless of the mother's line or mixed descent.  Pashtuns most likely originated as a tribal confederation of people or peoples of proto-Indo-European origin somewhere in Central Asia from which other Indo-Aryan and Iranian peoples may also originate.

Supporting paragraphs: Pashtun culture Pashtunwali
Answer: rural tribal