Moving out from Sudd Swam (Piou) to the East, they came to control the region of the Upper Nile River, pushing out the Funj and Jur, the Achol Eliot (Acholi?).
In the 18th century, with the arrival of the Nuer, Lual Yak together with his age-group and Ngok at large was forced to evacuate some areas, like Gaak-yuom in Bor, Jokou in Gajaak, Pakoop in Ayuaal, Pabiech in Kongoor and Piny-Wuut.
[citation needed] Ngokland is an area on the Sobat river extending from Dome to Baliet and its border Akoka to the north and northeast.
Jieng Post Migration Expansion From Sudan Swamp to the Confluence of Eastern bank of River Nile and Sobat River, Jieng have been an Indigenous Sole land Owners of Upper Nile Region by Earlier Settlement until their Migration Expansion from Sudd Swamp (Piou as Locally known) to Bhar El ghazel Region in 1300 Century and 1400 Century.
Archaeologist Roland Oliver notes that the period of an Iron Age indicate present of Jieng Nilotic around Sudd Swamp.
And some of the examples of Archaeological Physical evidences are things like dome-shaped houses, Luaks and tukuls built by Jieng Nilotic as for their livelihood around Sudd Swamp.
Yet the other Jieng dominant group currently known as Ngok Lual Yak remain in Sudd Swamp Marshes land until 1600.
In 61 AD the group of Roman Soldiers who were sent by Emperor Neo arrived in Sudd Swamp and encounter a Nilotic Speakers tribes.
And as indicated by the Archaeologist Roland Oliver, Nilotic archaeological evidences around Sudd Swamp have been there since 3000 BCE and with the break down of Nilotic historical migrations timeline to Upper Nile Region; Shilluks came to Upper Nile in 1450 as they migrated from Bhar El ghazel, where Nyikang, Gilo and Dimo break up over some dispute matter.
The Ruler King of Funj was in control of a Vast territories of land across Sudan before Jieng invaded him and Captured the Eastern bank of Upper Nile.
While Expanding out of Sudd Swamp Marshes, Jieng clashes with Funj Kindom under King Badi II from 1630 until around 1780 where the war subsidized.
Some Example of the Social ties and Economic ties that Jieng were bond with, across the Eastern bank of Upper Nile were things like cultural goods, e.g milks, honey, fruits, animals skins and grains in return with Metals, Salts and clothing with their counter part groups that they have defeated earlier like remnants traders of Funj Kingdom, Arabs and European merchants.
In Earlier 1800 Century a New Political dimensions balance of Conquest of the Nile basin was in Progress from Egypt headed by the Turko-Egyptian under a governor called Muhammad Khushid Ali Pasha.
In 1821 Funj Sultanate Kingdom collapsed and the Northern Sudan land fall under invasion of Egypt under the Ottoman Governor Muhammad Ali.
In 1827 Ali Khurshid Pasha backed by Turko-Egyptian of Ottoman Empire, excavate an invasion of Sudan and led a Force through the Dinka/Jieng lands.
1830 Ali Khurshid Pasha under orders of Turko-Egyptian of Ottoman led an expedition to the confluence junction end of the White Nile and River Sobat.
While in 1830, Ali Pashar who was residing on the Junction of White Nile and River Sobat (Wun Thony da Awiech) with his Turko-Egyptian army Forces first attempted to set up forts and garrisons in the area.
Quickly Ali Pashar and his Turko-Egyptian army Forces were forced to abandon Upper Nile Region which was already control by the Ottoman Khedives of Egypt, they left the area because they could not fully manage to maintain any real authority over the Upper Nile region due to lack of reinforcements and local diseases with no cure and treatment which was facing them.
The Missionaries came and settled in the same location at the Junction end of White Nile and River Sobat (Wun Thony da Awiech) which was Established by Ali APasha and his Turko-Egyptian army Forces back in 1830.
Earlier Upper Nile Region in 1897 In October 1897 an Anglo-Egyptian army under the command of Gen. Sir (later Lord) Horatio Herbert Kitchener was ordered to invade Sudan.
In September 1898, Officer Lord Kitchener who led Anglo-Egyptians Forces from Cairo, Egypt defeated the Mahdists under the command of Khalifa Abdallahi in the battle of Omdurman.
In 1914, a Military Outpost fort of 1830 that was established by Ali Pashar and his Turko-Egyptian army Forces along River Sobat in Wun Thony da Wiech (Dolleip Hill) was moved to Malakal.
Struve, however did not rule the area independently because the military were constantly interfering with his Civil administration due to territorials and provincial borders issues which were then needed to be established.
In early 1921, the British created a Native Civil Administration which empowered Local Authorities to participate in the Ruling governing System at the lowest grass level within their respective common dominated areas.
Earlier Upper Nile Region In October 1897 an Anglo-Egyptian army under the command of Gen. Sir (later Lord) Horatio Herbert Kitchener was ordered to invade Sudan.
On September 1898, Officer Lord Kitchener who led Anglo-Egyptians Forces from Cairo, Egypt toward Sudan with a Conquest to Conquer the land, defeated the Mahdists under the command of Khalifa Abdallahi in the battle of Omdurman.
While in Nasir, they occuppied an old Military outpost which was for Abyssinians (Ethiopians) who encroached in to Sudan territory through Sobat and Baro river.
In 1914, a Military Outpost that was established along River Sobat by British in Wun Thony da Wiech (Dolleip Hill) was moved to Malakal.
Struve, however did not rule the area independently because the military were constantly interfering with his civil administration due to territorials and provincial borders issues which were then needed to be established.
Four former districts of Native Administration namely Akobo, Bor, Fangak and Pibor were taken to newly Created Province of Jonglei.