Greater Nepal: The Land Lost at Sugauli (Tista to Sutlej)

"Greater Nepal" (Nepali: Bishal Nepal or Brihattar Nepal) is the name given to the maximum territorial extent of the Gorkha kingdom just before it lost the Anglo-Nepalese War of 1814-16 (Bikram Sambat 1871-72). At its height, the Gorkha realm ran roughly 1,500 kilometres along the Himalaya, from the Tista river in the east, where it bordered the shrunken kingdom of Sikkim, to the Sutlej river in the west, near Kangra in present-day Himachal Pradesh, India.

This band of hill and plain covered far more ground than modern Nepal. It reached across today's Indian states of Uttarakhand (the old kingdoms of Kumaon and Garhwal), parts of Himachal Pradesh in the west, and Darjeeling and western Sikkim in the east, together with a deep strip of the Terai lowlands to the south. Modern Nepal, by contrast, is bounded by the Mechi river in the east and the Mahakali (Kali) river in the west.

The phrase resonates strongly in Nepali nationalist and exam culture, where "Tista to Sutlej" (Tista dekhi Sutlej samma) is a byword for the country's lost lands. It is important to be precise, though: Greater Nepal was a short-lived military maximum reached by conquest, not a stable ancient homeland, and no Nepali monarch has ever formally revived a territorial claim to it.

The expansion began with Prithvi Narayan Shah, king of the small hill state of Gorkha, who launched his unification campaign in 1743 CE (BS 1799-1800) and conquered the three Malla city-states of the Kathmandu Valley by 1769, declaring the Kingdom of Nepal. His successors and the powerful Thapa and Pande courtiers pushed the frontier far beyond the valley over the following decades.

Driving eastward, Gorkhali forces overran the Kirat country and pressed into western Sikkim, advancing to the Tista river. Driving westward across the Gandaki and Karnali river basins, they absorbed a chain of petty principalities (the Baisi and Chaubisi confederacies) and conquered the Kumaon and Garhwal kingdoms by 1790-1804.

The westward drive halted only at the Sutlej around 1809-10, where the Gorkhalis collided with Maharaja Ranjit Singh's rising Sikh Empire. By about 1806-1814 the empire had reached its widest span. This overextension, and friction with the East India Company over the Terai frontier, set the stage for war with a far larger British-Indian power.

The Anglo-Nepalese War, also called the Gorkha War, ran from 1 November 1814 to 4 March 1816. The East India Company, commanded overall by Lord Moira, fielded far larger armies against Gorkhali generals such as Amar Singh Thapa in the west, with Kathmandu directed by the powerful prime minister Bhimsen Thapa.

Gorkhali defenders fought with famous tenacity. At the Battle of Nalapani (near Dehradun) in late 1814, Captain Balbhadra Kunwar held a small hill fort with a few hundred troops against thousands of British soldiers for over a month, an episode still honoured in Nepal. But superior numbers, artillery and Major General David Ochterlony's methodical western campaign eventually broke Gorkhali resistance.

Ochterlony evicted the Nepalese from Garhwal and Kumaon across the Kali river, ending roughly a decade of Gorkha rule there, and pushed toward the Kathmandu-controlled heartland. Facing the collapse of its western front, Nepal was forced to the negotiating table, producing the treaty that redrew its borders for good.

The Treaty of Sugauli (also spelled Sagauli or Segauli) was drafted on 2 December 1815 and ratified on 4 March 1816. It was negotiated on Nepal's side by Guru Gajraj Mishra and signed for the Company by Lieutenant-Colonel Paris Bradshaw. The treaty stripped Nepal of nearly all the lands it had conquered in the previous quarter-century.

Under its terms, Nepal renounced Sikkim in the east, gave up Kumaon and Garhwal and its claims west of the Kali (Mahakali) river, and ceded a broad belt of the Terai lowlands in the south. Article 3 required Nepal to hand over the lowlands, including tracts between the Kali and Rapti rivers and between the Rapti and the Gandak (Gunduck). The Mechi river became the new eastern boundary and the Mahakali the new western boundary, essentially the borders Nepal keeps today.

To soften the loss of Terai revenue, Article 4 committed the British to pay pensions totalling two lakh (200,000) rupees a year to chiefs and courtiers (barahdars) named by the king of Nepal. Nepal also had to accept a permanent British Resident in Kathmandu, giving the Company a lasting political foothold. This is why Sugauli is remembered less as a peace treaty than as the moment Nepal's independence was hemmed in.

The scale of the loss is why Greater Nepal remains such a charged idea. Widely cited estimates put pre-war Nepal at roughly 200,000-267,000 square kilometres and post-Sugauli Nepal at about 147,000 square kilometres, a reduction of roughly one-third of the country's territory. (These figures are estimates drawn from historical scholarship; no precise contemporary survey of the empire's borders exists, and the original treaty copies are reported lost.)

In directional terms, the whole eastern gain (toward the Tista and Sikkim) and the whole far-western gain (toward the Sutlej and Kangra) were surrendered, along with much of the fertile southern plains. What survived was the core hill state between the Mechi and the Mahakali, plus the central Terai, essentially the Nepal recognisable on maps today.

It is worth stressing what Nepal did not lose: the Kathmandu Valley, the central hills, and the country's independence itself. Unlike the Indian kingdoms around it, Nepal was never annexed into British India, which is a large part of why the loss of the outer territories is felt so sharply against the survival of the sovereign core.

Not all the ceded Terai stayed British. Some difficult-to-govern lowland tracts were handed back within months of 1816, and the associated pension payments were adjusted accordingly. The larger restoration came in 1860 (BS 1917), when the British returned four western Terai districts to Nepal.

These four districts, Banke, Bardiya, Kailali and Kanchanpur, became known as the "Naya Muluk" (literally "new country" or "new territory"). They were granted as a reward for Nepal's military help to the British in crushing the Indian Rebellion of 1857 (the Sepoy Mutiny), a campaign directed by the Rana prime minister Jung Bahadur Rana, who sent Nepali troops into northern India.

After 1860 the Rana state moved to consolidate the Naya Muluk, opening revenue offices and encouraging settlement from the hills. Today these districts sit in Nepal's Lumbini and Sudurpashchim provinces and remain firmly part of the country, the one significant piece of the Sugauli losses that was ever recovered.

In modern Nepal, "Greater Nepal" survives mainly as a nationalist and historical memory rather than a live diplomatic claim. Campaign groups such as the Greater Nepal Nationalist Front have periodically demanded that India "return" the Tista-to-Sutlej lands, sometimes citing the Sugauli treaty, but no Nepali government or monarch has ever adopted this as official policy.

The concept is often confused with Nepal's real, current border disputes, which are far narrower. The most prominent of these concerns Kalapani, Limpiyadhura and Lipulekh in the far west, near the Mahakali headwaters, where Nepal and India disagree over exactly where the treaty line runs. That is a live legal argument about the Sugauli boundary itself, not a claim to Greater Nepal.

For students and general readers, the useful distinction is this: the Treaty of Sugauli is the legal event that fixed Nepal's borders, while "Greater Nepal" is the map of what existed just before it, the high-water mark of the Gorkha empire from the Tista to the Sutlej.