Punjab (; Gurmukhi: ਪੰਜਾਬ; Shahmukhi: پنجاب; Punjabi: [pənˈdʒaːb] (listen); also romanised as Panjāb or Panj-Āb) is a geopolitical, cultural, and historical region in South Asia, specifically in the northern part of the Indian subcontinent, comprising areas of eastern Pakistan and northwestern India. Punjab's major cities are Lahore, Faisalabad, Rawalpindi, Gujranwala, Multan, Ludhiana, Amritsar, Sialkot, Chandigarh, Shimla, Jalandhar, Gurugram, and Bahawalpur. 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, and had numerous migrations by the Indo-Aryan peoples. 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 land ownership. 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."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 region is vulnerably situated on the principal route of invasions through the northwestern frontier of the Indian subcontinent, including those of Persians, Macedonians, Scythians, Parthians, Kushans, Huns, Arabs, Turks, and Mongols until the eighteenth century which promoted a lifestyle that entailed engaging in warfare to protect the land, with the Marathas, Durranis and British invading the region in subsequent decades. The boundaries of the region are ill-defined and focus on historical accounts and thus the geographical definition of the term "Punjab" has changed over time. In the 16th century Mughal Empire it referred to a relatively smaller area between the Indus and the Sutlej rivers. In British India, until the Partition of India in 1947, the Punjab Province encompassed the present-day Indian states and union territories of Punjab, Haryana, Himachal Pradesh, Chandigarh, and Delhi, and the Pakistani regions of Punjab, and Islamabad Capital Territory. It bordered the Balochistan and Khyber-Pakhtunkhwa regions to the west, Kashmir to the north, the Hindi Belt to the east, and Rajasthan and Sindh to the south. The predominant ethnolinguistic group of the Punjab region is the Punjabi people, who speak the Indo-Aryan Punjabi language. Punjabi Muslims are the majority in West Punjab (Pakistan), while Punjabi Sikhs and Punjabi Hindus are the majority in East Punjab (India). Other religious groups are Christianity, Jainism, Zoroastrianism, Buddhism, and Ravidassia.

Lalru is a town and a Municipal Council In Mohali District about 30 km from Chandigarh, the capital of both Haryana and Indian Punjab, on the Chandigarh-Ambala National Highway, NH 22. Lalru is having one of the toll tax barrier on this Chandigarh - Delhi National Highway. It is the part of Greater Mohali and Chandigarh Capital Region (CCR) or Chandigarh Metropolitan Region (CMR), Which is an area, which includes the union territory city of Chandigarh, and its neighboring cities of Mohali, Zirakpur, New Chandigarh (in Punjab) and Panchkula (in Haryana). Chandigarh Administration, Greater Mohali Area Development Authority (GMADA) and Haryana Urban Development Authority (HUDA) are different authorities responsible for development of this region. The economy of the region is interdependent as the area is continuously inhabited, though falling under different states. There is lot of movement of people and goods daily to and from suburbs, like most of the people working in Chandigarh live in a suburb like Zirakpur. The local industry is on the outskirts like Derabassi, Lalru and Baddi. Greater Mohali is an extension of Mohali city and includes the areas of Mundi Kharar, Lalru and Landran. This area comes under Greater Mohali Area Development Authority (GMADA).