The name "Belgium" is derived from the Belgae tribe. The first recorded use of the name "Belgium" is in a letter written by Julius Caesar in 54 BC. The name was later used by the Romans to refer to the entire region of Gaul that was inhabited by the Belgae.
After the fall of the Roman Empire, Belgium was ruled by a variety of Germanic tribes. In the 9th century, Belgium became part of the Carolingian Empire. The Carolingian Empire was divided in 843, and Belgium became part of the West Frankish Kingdom. The West Frankish Kingdom eventually became France, and Belgium remained part of France until the 16th century.
In the 16th century, Belgium was part of the Spanish Netherlands. The Spanish Netherlands were ruled by the Habsburg dynasty. The Habsburg dynasty was also the ruling family of Austria, and Belgium became part of the Austrian Netherlands in the 18th century.
In 1830, Belgium gained independence from the Netherlands. Belgium has been an independent country ever since.