Question: James Robertson helped established the association that is in what modern-day town?

Context paragraphs:
Naraggara: Naraggara was an ancient city in Africa Proconsularis located 33 kilometer northwest of modern-day El Kef, Tunisia.  It is considered to be the modern-day town of Sakiet Sidi Youssef, also located in Tunisia.  The name Naraggara, a Libyan inscription, suggests a pre-Roman origin for the city, along with the name being bilingual in Latin and Neo-Punic.

Watauga Association: The Watauga Association (sometimes referred to as the Republic of Watauga) was a semi-autonomous government created in 1772 by frontier settlers living along the Watauga River in what is now Elizabethton, Tennessee.  Although it lasted only a few years, the Watauga Association provided a basis for what later developed into the state of Tennessee and likely influenced other western frontier governments in the trans-Appalachian region.  North Carolina annexed the Watauga settlement area, by then known as the Washington District, in November 1776.  Within a year, the area was placed under a county government, becoming Washington County, North Carolina, in November 1777.  (This is the present day Washington County, Carter County and other areas now located in the northeast part of the state of Tennessee.)

Dorestad: Dorestad was an early medieval emporium, located in the southeast of the province of Utrecht in the Netherlands, close to the modern-day town of Wijk bij Duurstede.  The township was established at the base of the former Roman fortress of Levefanum in the 7th century, and was situated near the northernmost branch of the Rhine which splits into the Lek and the Kromme Rijn.

Golubac Fortress: The Golubac Fortress (Serbian: Голубачки град or "Golubački grad", Hungarian: "Galambóc vára" , Bulgarian: Гълъбец , Romanian: "Cetatea Golubăț" , Turkish: "Güvercinlik Kalesi" ) was a medieval fortified town on the south side of the Danube River, 4 km downstream from the modern-day town of Golubac, Serbia.  The fortress, which was most likely built during the 14th century, is split into three compounds which were built in stages.  It has ten towers, most of which started square, and several of which received many-sided reinforcements with the advent of firearms.

Battle of Tzirallum: The Battle of Tzirallum was one of the civil wars of the Tetrarchy fought on 30 April 313 between the Roman armies of emperors Licinius and Maximinus.  The battle location was on the "Campus Serenus" at Tzirallum, identified as the modern-day town of Çorlu, in Tekirdağ Province, in the Turkish region of Eastern Thrace.  Sources put the battle between 18 and 36 Roman miles from Heraclea Perinthus, the modern-day town of Marmara Ereğlisi.

James Robertson (explorer): James Robertson (June 28, 1742 – September 1, 1814) was an American explorer, soldier and Indian agent, and one of the founding fathers of the State of Tennessee.  An early companion of explorer Daniel Boone, Robertson helped establish the Watauga Association in the early 1770s, and helped defend Fort Watauga from an attack by the Cherokees in 1776.  In 1779, he cofounded what is now Nashville, and was instrumental in the settlement of Middle Tennessee.  He served as a brigadier general in the Southwest Territory militia in the early 1790s.

Tlatilco: Tlatilco was a large pre-Columbian village in the Valley of Mexico situated near the modern-day town of the same name in the Mexican Federal District.  It was one of the first chiefdom centers to arise in the Valley, flourishing on the western shore of Lake Texcoco during the Middle Pre-Classic period, between the years of 1200 BCE and 200 BCE.  It gives its name to the "Tlatilco culture", which also included the town of Tlapacoya, on the eastern shore of Lake Chalco.

Neighbourhoods of Coatbridge: Coatbridge is a town which grew out of a series of 18th century hamlets on the road between Airdrie and Glasgow.  During the 19th century these hamlets grew into the modern-day town of Coatbridge.  A number of these hamlets constitute the neighbourhoods of Coatbridge.  Overlaid on the older hamlets are modern-day council estates built as a part of programme of social housing construction in the 1930s and 1950s.

Elateia: Elateia (Greek: Ελάτεια ) was an ancient Greek city of Phocis, and the most important place in that region after Delphi.  It is also a modern-day town that is a former municipality in the southeastern part of Phthiotis.  Since the 2011 local government reform, it is a municipal unit of the municipality Amfikleia-Elateia.  Its population is 3,538 inhabitants (2011 census) and its land area is 154.361 km².  The municipal seat was the town of Eláteia (pop.  2,372); other towns are Zeli (673), Panagítsa (266), Lefkochóri (123), Sfáka (93), and Katályma (11).

Robertson's: Robertson's is a UK brand of marmalades and fruit preserves that was founded by James Robertson in 1864.  The company was run as a partnership until 1903, when it was incorporated as a limited company - James Robertson & Sons, Preserve Manufacturers, Limited.  It produces the "Golden Shred" marmalade among other products.

Supporting paragraphs: James Robertson (explorer) Watauga Association
Answer: Elizabethton, Tennessee