Here he built a thriving commercial enterprise, exporting rice, spices and beef, and importing weapons and textiles.
The first was the largest, and it was the Raja from this state who allowed Lange to trade from the port city of Tanjungkarang, in exchange for a yearly fee.
He exported coffee, rice, spices and green tobacco, importing textiles and weapons that could easily be sold to the local warring tribes.
The town was situated on a narrow peninsula, which made it possible to load goods on the east and the west side.
The third factor was that the local population on Bali was suffering from an economic depression, after a war with Java that had made the export of slaves impossible.
Bali was well situated to reap the benefits of this shortage because the island population was well skilled in rice farming, and because the climate was such that it allowed for up to three harvests a year.
The Dutch nobleman and politician Wolter Robert, Baron van Hoevell visited Bali and Mads Lange, and gave a description of the factorij:[8] A large stone wall was the first thing that caught our eye.
It proved that mister Lange did not blindly entrust his well-being to Raja of the country in which he was residing, and that vigilance and a gun in hand were better to rely on.
Through the creative force of mister Lange, a sort of colony has steadily grown within those walls, a lively and densely occupied city, which possesses order, dynamism and prosperity.Lange was in good standing with the Balinese, and within a few years he had built a flourishing company with about fifteen ships, plying lively trade among ports in the East Indies, the West Indies, and Europe.
[11][12] From 1841 to 1843 Lange had an intimate relationship with his second cousin Malana von Munk, who was a distant relative of Christian IX of Denmark.
Predominantly French ships sailed to Kotta to load trading goods, especially cattle, ponies, pigs and poultry.
The next day the Dutch troops marched for the residency of Singaraja, where this city was taken without much resistance as most Balinese were moving inland to the fort of Djagaraga.
Lange was able to keep the states of Tabanan and Badung neutral, but the rest of the Balinese forces assembled at Djagaraga, the same place they had sought refuge in 1846.
The Balinese arrived at the palace with a force of 12,000 men, after the Dutch had allowed them to take as many guards as the Rajas deemed necessary.
[16] The Dutch now decided to focus their attention on the south of Bali, and they attacked the small states of Karangasem and Klungkung.
The Dutch now focussed their attacks on Klungkung, where the most important and holiest Raja of Bali resided, the Dewa Agung.
[17] Lange's trade suffered from the war, and when the Raja of Kassim launched an attack on neighbouring Mengwi, the people in Kotta feared a counter-attack.
Mads convinced the Rajas to assemble a force of 16,000 men and join him on a journey to the Dewa Agung, to plead with him to conduct peace negotiations with the Dutch.
Even though fortune favoured the Balinese after the death of Michiels and the retreat of the Dutch army, the Rajas decided to accept Lange's request.
The Dutch for their part rewarded Lange with the Knight's Cross in the Order of the Netherlands Lion, awarded on 11 December 1849 by King William III.
Lange was able to buy rice in Lombok and sell it to Raja Kassiman, but his expensive oil mill ground to a halt due to a shortage of coconuts.
Sailing ship were out-competed by steamers, resulting in more traffic for large ports like Hong Kong and Singapore, and less for smaller places.
Lange also suffered from illness, and a never-sent letter to the Raja of Tabanan shows he had plans to return to Rudkøbing.
On 28 July 1854 the many gifts Lange had donated to the museum resulted in his being awarded the Danish Golden Medal of Merit by Frederik VII of Denmark.
The initiative for this recognition of merit was taken by Christian Jürgensen Thomasen, who on 7th march sent a letter to the director of the Royal Gallery, nominating Mads Lange for donating valuable artifacts to the Ethnographic Museum.
An obelisk on a white base was erected in 1927 by the Dutch government, at the urging of the Danish consul at Surabaya, Johan Ernst Quintus Bosz.
Mads Lange's whole life he hoped to marry his cousin Ida Bay, who was ten years younger than him.
Andreas Emil was educated at the Raffles Institute, married a woman of European and Asian ancestry,[32] had several children, and was Private Secretary to the Rajah of Sarawak for at least eighteen years, during which time he had six sons and two daughters between 1881 and 1899.
He fell in love with her and was so smitten he ignored all the customary stereotypes that in those days stood in the way of a marriage between a full-blooded Malay man and a Eurasian woman.
[34] Former New Zealand prime minister David Lange, who is known to be of Danish ancestry, is descended from a different branch of the family, according to himself.