Given the question: Information: - Brussels, officially the Brussels-Capital Region, is a region of Belgium comprising 19 municipalities, including the City of Brussels which is the capital of Belgium. The Brussels-Capital Region is a part of both the French Community of Belgium and the Flemish Community, but is separate from the region of Flanders (in which it forms an enclave) or Wallonia. The region has a population of 1.2million and a metropolitan area with a population of over 1.8million, the largest in Belgium. - France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans and had a total population of almost 67 million people as of January 2017. It is a unitary semi-presidential republic with the capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux. - The Nervii were one of the most powerful Belgic tribes, living in northern Gaul at the time of its conquest by Rome. Their territory corresponds to the central part of modern Belgium, including Brussels, and stretched southwards into French Hainault. During their 1st century BC Roman military campaign, Caesar's contacts among the Remi stated that the Nervii were the most warlike of the Belgae. In times of war, they were known to trek long distances to take part in battles. Being one of the distant northern Belgic tribes, with the Menapii to the west, and the Eburones to their east, they were considered by Caesar to be relatively uncorrupted by civilization. - The Roman Republic was the era of ancient Roman civilization beginning with the overthrow of the Roman Kingdom, traditionally dated to 509 BC, and ending in 27 BC with the establishment of the Roman Empire. It was during this period that Rome's control expanded from the city's immediate surroundings to hegemony over the entire Mediterranean world. - Gaul (Latin: "Gallia") was a region of Western Europe during the Iron Age that was inhabited by Celtic tribes, encompassing present day France, Luxembourg, Belgium, most of Switzerland, Northern Italy, as well as the parts of the Netherlands, Central Italy and Germany on the west bank of the Rhine. It covered an area of 190,800mi or 494,169km. According to the testimony of Julius Caesar, Gaul was divided into three parts: Gallia Celtica, Belgica and Aquitania. Archaeologically, the Gauls were bearers of the La Tene culture, which extended across all of Gaul, as well as east to Raetia, Noricum, Pannonia and southwestern Germania during the 5th to 1st centuries BC. During the 2nd and 1st centuries BC, Gaul fell under Roman rule: Gallia Cisalpina was conquered in 203 BC and Gallia Narbonensis in 123 BC. Gaul was invaded after 120BC by the Cimbri and the Teutons, who were in turn defeated by the Romans by 103BC. Julius Caesar finally subdued the remaining parts of Gaul in his campaigns of 58 to 51BC. - Vercingetorix (or 82 BC 46 BC) was a king and chieftain of the Arverni tribe; he united the Gauls in a revolt against Roman forces during the last phase of Julius Caesar's Gallic Wars. - The Roman Empire (Koine and Medieval Greek: , tr. ) was the post-Roman Republic period of the ancient Roman civilization, characterized by government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia. The city of Rome was the largest city in the world BC AD, with Constantinople (New Rome) becoming the largest around 500 AD, and the Empire's populace grew to an estimated 50 to 90million inhabitants (roughly 20% of the world's population at the time). The 500-year-old republic which preceded it was severely destabilized in a series of civil wars and political conflict, during which Julius Caesar was appointed as perpetual dictator and then assassinated in 44 BC. Civil wars and executions continued, culminating in the victory of Octavian, Caesar's adopted son, over Mark Antony and Cleopatra at the Battle of Actium in 31 BC and the annexation of Egypt. Octavian's power was then unassailable and in 27 BC the Roman Senate formally granted him overarching power and the new title "Augustus", effectively marking the end of the Roman Republic. - Belgium , officially the Kingdom of Belgium, is a sovereign state in Western Europe bordered by France, the Netherlands, Germany, Luxembourg, and the North Sea. It is a small, densely populated country which covers an area of and has a population of about 11million people. Straddling the cultural boundary between Germanic and Latin Europe, Belgium is home to two main linguistic groups: the Dutch-speaking, mostly Flemish community, which constitutes about 59% of the population, and the French-speaking, mostly Walloon population, which comprises 41% of all Belgians. Additionally, there is a small group of German-speakers who live in the East Cantons located around the High Fens area, and bordering Germany. - The Eburones (Greek: , Strabo), were, supposedly, a germanic tribe who lived in the northeast of Gaul, in what is now the southern Netherlands, eastern Belgium, and the German Rhineland, in the period immediately before this region was conquered by Rome. Though living in Gaul, they were also described as being both Belgae, and Germani (for a discussion of these terms, see below). - A proconsul (pro consule in Latin) was a Roman consul whose imperium (the power to command an army) was extended, or a former consul who was given consular imperium. The original purpose of this was to create extra military commanders to support or conduct military operations. With the acquisition of territories beyond Italy which were annexed as Roman provinces, the proconsuls became one of two types of provincial governors. The other was the propraetor. The proconsuls were one of three types of promagistrates, the other being the propraetor and the proquaestor. - Gaius Julius Caesar (13 July 100BC 15 March 44BC), known as Julius Caesar, was a Roman politician, general, and notable author of Latin prose. He played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire. - Boduognatus ( ? -- BC 57 ) was a leader of the Belgic Nervii during the Gallic Wars . He was the overall commander of the Belgic forces at the Battle of Sabis in 57 BC , in which he surprised , and almost defeated , Julius Caesar . - The Menapii were a Belgic tribe of northern Gaul in pre-Roman and Roman times. According to descriptions in such authors as Strabo, Caesar, Pliny the Elder and Ptolemy their territory had stretched northwards to the mouth of the Rhine in the north, but more lastingly it stretched along the west of the Schelde river. In later geographical terms this territory corresponds roughly to the modern coast of Flanders, the Belgian provinces of East and West Vlaanderen. It also extended into neighbouring France and the river deltas of the southern Netherlands. - The Remi were a Belgic people of north-eastern Gaul (Gallia Belgica). The Romans regarded them as a "civitas", a major and influential polity of Gaul, The Remi occupied the northern Champagne plain, on the southern fringes of the Forest of Ardennes, between the rivers Mosa (Meuse) and Matrona (Marne), and along the river valleys of the Aisne and its tributaries the Aire and the Vesle. The Remi were known to be a rather overweight tribe because of their vast supply of food available on the Champagne Plain. In fact, being obese was an honor in the Remi tribe. - In the military sciences, the term military campaign applies to large scale, long duration, significant military strategy plan incorporating a series of inter-related military operations or battles forming a distinct part of a larger conflict often called a war. The term derives from the plain of Campania, a place of annual wartime operations by the armies of the Roman Republic. - The Battle of Alesia or Siege of Alesia was a military engagement in the Gallic Wars that took place in September, 52 BC, around the Gallic "oppidum" (fortified settlement) of Alesia, a major centre of the Mandubii tribe. It was fought by the army of Julius Caesar against a confederation of Gallic tribes united under the leadership of Vercingetorix of the Arverni. It was the last major engagement between Gauls and Romans, and is considered one of Caesar's greatest military achievements and a classic example of siege warfare and investment. The battle of Alesia marked the end of Gallic independence in France and Belgium. - The Gallic Wars were a series of military campaigns waged by the Roman proconsul Julius Caesar against several Gallic tribes. Rome's war against the Gallic tribes lasted from 58 BC to 50 BC and culminated in the decisive Battle of Alesia in 52 BC, in which a complete Roman victory resulted in the expansion of the Roman Republic over the whole of Gaul (mainly present-day France and Belgium). While militarily just as strong as the Romans, the internal division between the Gallic tribes helped ease victory for Caesar, and Vercingetorix's attempt to unite the Gauls against Roman invasion came too late. The wars paved the way for Julius Caesar to become the sole ruler of the Roman Republic. - Rome is a city and special "comune" (named "Roma Capitale") in Italy. Rome is the capital of Italy and of the Lazio region. With 2,870,336 residents in , it is also the country's largest and most populated "comune" and fourth-most populous city in the European Union by population within city limits. The Metropolitan City of Rome has a population of 4.3million residents. The city is located in the central-western portion of the Italian Peninsula, within Lazio (Latium), along the shores of Tiber river. The Vatican City is an independent country geographically located within the city boundaries of Rome, the only existing example of a country within a city: for this reason Rome has been often defined as capital of two states. What entity does 'boduognatus' has the relation 'country of citizenship' with?
The answer is:
gaul