Muslim period in the Indian subcontinent in the context of "Muslim conquests in the Indian subcontinent"

The Muslim conquests on the Indian subcontinent mainly took place between the 13th and the 18th centuries, establishing the Indo-Muslim period. Earlier Muslim conquests on the Indian subcontinent include the invasions which started in the northwestern Indian subcontinent (modern-day Pakistan), especially the Umayyad campaigns in India. Later during the 8th century, Mahmud of Ghazni, sultan of the Ghaznavid Empire, invaded vast parts of Punjab and Gujarat during the 11th century. After the capture of Lahore and the end of the Ghaznavids, the Ghurid ruler Muhammad of Ghor laid the foundation of Muslim rule in India in 1192. In 1202, Muhammad Bakhtiyar Khalji led the Muslim conquest of Bengal, marking the easternmost expansion of Islam at the time.

The Ghurid Empire soon evolved into the Delhi Sultanate in 1206, ruled by Qutb ud-Din Aibak, the founder of the Mamluk dynasty. With the Delhi Sultanate established, Islam was spread across most parts of the Indian subcontinent. In the 14th century, the Khalji dynasty under Alauddin Khalji, extended Muslim rule southwards to Gujarat, Rajasthan, and the Deccan. The successor Tughlaq dynasty temporarily expanded its territorial reach to Tamil Nadu. The disintegration of the Delhi Sultanate, capped by Timur's invasion in 1398, caused several Muslim sultanates and dynasties to emerge across the Indian subcontinent, such as the Gujarat Sultanate, Malwa Sultanate, Bahmani Sultanate, Jaunpur Sultanate, Madurai Sultanate, and the Bengal Sultanate. Some of these, however, were followed by Hindu reconquests and resistance from the native powers and states, such as the Telugu Nayakas, Vijayanagara, and Rajput states under the Kingdom of Mewar.

In India, social classification based on caste has its origin in ancient times. It was transformed by various ruling elites in medieval, early-modern, and modern India, especially in the aftermath of the collapse of the Mughal Empire and the establishment of the British Raj. Caste is traditionally associated with Hinduism, but is more pervasive in extent: an estimated 98% of contemporary Indians, including Hindus, Muslims, Christians, Sikhs, Buddhists, and Jains, identify with a caste.

Beginning in ancient India, the caste system was originally centered around varna, with Brahmins (priests) and, to a lesser extent, Kshatriyas (rulers and warriors) serving as the elite classes, followed by Vaishyas (traders and merchants) and finally Shudras (labourers). Outside of this system are the oppressed, marginalised, and persecuted Dalits (also known as "Untouchables") and Adivasis (tribals). Over time, the system became increasingly rigid, and the emergence of jati led to further entrenchment, introducing thousands of new castes and sub-castes. With the arrival of Islamic rule, caste-like distinctions were formulated in certain Muslim communities, primarily in North India. The British Raj furthered the system, through census classifications and preferential treatment to Christians and people belonging to certain castes. Social unrest during the 1920s led to a change in this policy towards affirmative action.

Shāh (/ʃɑː/; Persian: شاه [ˈʃɒːɦ] ) is a royal title meaning 'king' in Persian. Though chiefly associated with the monarchs of Iran, it was also used to refer to the leaders of numerous Persianate societies, such as the Ottoman Empire, the Khanate of Bukhara and the Emirate of Bukhara, the Mughal Empire, the Bengal Sultanate, and various Afghan dynasties, as well as among Gurkhas. With regard to Iranian history, in particular, each ruling monarch was not seen simply as the head of the concurrent dynasty and state, but as the successor to a long line of royalty beginning with the original Persian Empire of Cyrus the Great. To this end, he was more emphatically known as the Shāhanshāh (شاهنشاه [ˌʃɒːhænˈʃɒːɦ]), meaning 'King of Kings', since the Achaemenid dynasty. A roughly equivalent title is Pādishāh (پادشاه; lit. 'Master King'), which was most widespread during the Muslim period in the Indian subcontinent.

People of the Book, or Ahl al-Kitāb (Arabic: أهل الكتاب), is a classification in Islam for the adherents of those religions that are regarded by Muslims as having received a divine revelation from God, generally in the form of a holy scripture. The classification chiefly refers to pre-Islamic Abrahamic religions. In the Quran, they are identified as the Jews, the Christians, the Sabians, and—according to some interpretations—the Zoroastrians. Beginning in the 8th century, this recognition was extended to other groups, such as the Samaritans (who are closely related to the Jews), and, controversially, Hindus, Buddhists, Jains, and Sikhs, among others. In most applications, "People of the Book" is simply used by Muslims to refer to the followers of Judaism and Christianity, with which Islam shares many values, guidelines, and principles.

Historically, in countries and regions following Islamic law, the religious communities that Muslims recognized as People of the Book were subject to a legal status known as dhimmi, meaning that they had the option to pay a special head tax called jizya in exchange for being granted the privilege to practice their faith and govern their community according to the rules and norms of their own religion. Jizya was levied on all mentally and physically capable adult males from these recognized non-Muslim communities. Practitioners of non-recognized religions were not always granted this privilege, although many later Islamic states, particularly those in the Indian subcontinent, amended their laws to extend the application of dhimmi status beyond the originally designated Jewish and Christian communities.

Education in the Indian subcontinent began with the teaching of traditional subjects, including Indian religions, mathematics, and logic. Early Hindu and Buddhist centers of learning, such as the ancient Takshashila (in modern-day Pakistan), Nalanda (in India), Mithila (in India and Nepal), Vikramshila, Telhara, and Shaunaka Mahashala in the Naimisharanya forest, served as key sites for education. Islamic education became prominent with the establishment of Islamic empires in the region during the Middle Ages. Later, Europeans introduced Western education during the colonial period in India.

Awadh (Hindi: [əˈʋədʱ] ), known in British Raj historical texts as Avadh or Oudh, is a historical region in northern India, now constituting the central portion of Uttar Pradesh. It is roughly synonymous with the ancient Kosala region of Hindu, Buddhist, and Jain scriptures.

It was a province of all the major Islamic dynasties in India including the Mughal Empire. With the decline of late Mughal Delhi, Awadh became a major source of literary, artistic, religious, and architectural patronage in northern India under the rule of its eleven rulers, called Nawabs. From 1720 to 1856, the nawabs presided over Awadh, with Ayodhya and Faizabad serving as the region's initial capitals. Later, the capital was relocated to Lucknow, which is now the capital of Uttar Pradesh.