Northwestern South Asia in the context of "Muslim conquests in the Indian subcontinent"

Punjab (/pʌnˈdʒɑːb/ pun-JAHB; Punjabi: Panjāb, pronounced [pəɲˈd͡ʒaːb] ) is a geographical, ethnolinguistic, and historical region in South Asia, located in its northwestern part, comprising areas of modern-day Pakistan and northwestern India. It is primarily inhabited by the Punjabi people. Lahore is its largest city and historic capital, with other major cities including Faisalabad, Rawalpindi, Gujranwala, Multan, Sialkot, Sargodha, and Bahawalpur in Pakistan; alongside Ludhiana, Amritsar, Chandigarh, Jalandhar, Patiala, Mohali, Bathinda, Firozpur, and Fazilka in India.

Punjab grew out of the settlements along the five rivers, which served as an important route to the Near East as early as the ancient Indus Valley civilization, dating back to 3000 BCE, followed by migrations of the Indo-Aryan peoples. Agriculture has been the chief economic feature of the Punjab and formed the foundation of Punjabi culture. The Punjab emerged as an important agricultural region, especially following the Green Revolution during the mid-1960s to the mid-1970s, and has been described as the "breadbasket of both India and Pakistan."

Punjabi culture grew out of the settlements along the five rivers (the name Punjab, is derived from two Persian words, Panj meaning "Five" and Âb meaning "Water") which served as an important route to the Near East as early as the ancient Indus Valley civilization, dating back to 3000 BCE. Agriculture has been the major economic feature of the Punjab and has therefore formed the foundation of Punjabi culture, with one's social status being determined by landownership. The Punjab emerged as an important agricultural region, especially following the Green Revolution during the mid-1960s to the mid-1970s, has been described as the "breadbasket of both India and Pakistan". Besides being known for agriculture and trade, the Punjab is also a region that over the centuries has experienced many foreign invasions and consequently has a long-standing history of warfare, as the Punjab is situated on the principal route of invasions through the northwestern frontier of the Indian subcontinent, which promoted to adopt a lifestyle that entailed engaging in warfare to protect the land. Warrior culture typically elevates the value of the community's honour (izzat), which is highly esteemed by Punjabis.

The History of Punjab is the history of the Punjab region which is a geopolitical, cultural, and historical region in the northwest of South Asia, comprising the Punjab province in Pakistan and the Punjab state in India. It is believed that the earliest evidence of human habitation in Punjab traces to the Soan valley of the Pothohar, between the Indus and the Jhelum rivers, where Soanian culture developed between 774,000 BC and 11,700 BC. This period goes back to the first interglacial period in the second Ice Age, from which remnants of stone and flint tools have been found.

The Punjab region was the site of one of the earliest cradle of civilizations, the Bronze Age Harrapan civilization that flourished from about 3000 B.C. and declined rapidly 1,000 years later, following the Indo-Aryan migrations that overran the region in waves between 1500 and 500 B.C. The migrating Indo-Aryan tribes gave rise to the Iron Age Vedic civilization, which lasted till 500 BC. During this era, the Rigveda was composed in Punjab, laying the foundation of Hinduism. In the 6th century BC, Pushkarasarin, the monarch of Gandhara, assumed a role in halting the expansionary ambitions of the Achaemenid Empire until during the reign of Darius wherein tribute rendered by Gandhara to him is first documented. A century later, the Janapadas of Punjab encountered the expansive undertakings of Alexander. The Janapadas exhibited resistance to his advances, notably the Aśvaka of Gandhara, the Mallians of South Punjab, and Porus of Central Punjab. Following the demise of Alexander, Chandragupta Maurya, who had received his education in the city of Taxila, garnered support from republics such as Trigarta and Gandhara. He subsequently conquered the Nanda Empire, with Taxila being designated as the provincial capital of the Northwestern territories. After its decline, the Indo-Greeks, Indo-Sakas and Indo-Parthians successively established reigns in Punjab however other states maintained autonomy and other janapadas such as that of the Yaudheya and the Audumbaras in Eastern Punjab resisted their expansions. In the late 1st century AD the Kushan Empire annexed Punjab, Gandharas cultural zenith occurred during this period in which artwork from the region flourished.

Tianzhu (Chinese: 天竺; pinyin: Tiānzhú Tian (天) means heaven, and Zhu (竺) means bamboo in Chinese.

Tianzhu was also referred to as Wutianzhu (五天竺, literal meaning is "Five Indias"), because there were five geographical regions on the Indian subcontinent known to the Chinese: Central, Eastern, Northern, Southern, and Western India.